Photodetectors For Lidar: Hamamatsu Offers Solution For Lidar Applications With Various Devices
Photodetectors For Lidar: Hamamatsu Offers Solution For Lidar Applications With Various Devices
2019
   Hamamatsu offers
   solution for LiDAR applications
   with various devices
    TOF system
                                                              Optical system
                                               Light source
                                                                               Refe
                                                                                   renc
                                                                                        e lig
                                                                                               ht
                                                Photosensor                                                 Object
                                   (MPPC, APD, PIN photodiode)
                                                                                             light
                                                                                      cted
                                                                               Refle
               Timer circuit
               Time measurement circuit
                                                                        Distance measurement
Triangulation
                                                                     TOF
                                            Proximity
2
                                                                                        Photodetectors for LiDAR
Comparison
Suitable for:
 - Long range measurement         - Array / Large area
 - Direct TOF                     - Low cost
APD
It is widely used as a highly sensitive light-receiving element for rangefinder.
By electron multiplication, it will be able to increase the S/N until the shot noise limit.
In many cases, the minimum reception level is determined by the shot noise of background light. For this reason, in the
rangefinder, often used is several tens of times of the multiplication factor to 10 times. It will be possible to capture the
distance of distant target than in the case of PIN photodiode. In order to reduce the shot noise due to the background
light, it is used in conjunction with optical bandpass filters. The readout circuit, as in the case of PIN photodiode,
transimpedance amplifier will be used.
Suitable for:
- Long range       - Direct TOF      - High ambient light with bandpass filter
                                                                                                                              3
PIN photodiode
As for rangefinder, it is the most simple light-receiving element. Its sensitivity is stable, it is uniform. Wide dynamic
range. It can also be used under strong background light. The read circuit, and the transimpedance amplifier is widely
used. The minimum receive level is determined by the noise of the readout circuit.
Suitable for:
- Short range                      - Direct TOF                          - Low cost
- Array / Large area               - High ambient light                  - Low voltage operation
Comparison chart
Readout circuit
         Transimpedance amplifier               Register with high frequency amplifier          Register with high comparator
*Suitable for MPPC, APD and PIN photodiode    *Suitable for MPPC                          *Suitable for MPPC
4
                                                                                           Photodetectors for LiDAR
    MPPC ®
                                              The S13720-1325CS/PS are MPPC for LiDAR applications. These feature
                                              high sensitivity to near-infrared wavelengths.
                                              The photon detection efficiency (PDE) at near-infrared wavelengths, often
                                              used in LiDAR, has been improved over our previous products.
                                              Ceramic package type and surface mount type with a photosensitive area of
                                              1.3 × 1.3 mm and pixel pitch of 25 μm are available.
                                              We also provide an evaluation module for the S13720-1325 series.
Photo - -
                                                                                                                          5
                                                                                      Dimensional outline
        Dimensional
Dimensional outline    outlines (unit: mm)
S13720-1325CS S13720-1325PS
                                              +0                                                                                       2.625
           Anode terminal                  6.0 -0.25
                                                                                                                                    0.4 ± 0.15
           indicator hole
                                                                                                                                                                    0.4 ± 0.15
                                             1.3
         Photosensitive area                                                                    Photosensitive area                         0.26 ± 0.15*
         1.3 × 1.3                                                                              1.3 × 1.3
                                                          5.0 ± 0.2
                               1.3
2.1
                                                                                                                                                                    1.3
                                                                                                                                                                    0.4 ± 0.15
                          Silicone resin
                 Photosensitive surface                                                                                                  1.3
                                                                                                            0.85 ± 0.15
                                                          1.5
Silicone resin
                                                                                                                          0.3
                               1.0
12 ± 1.0
NC
                                                                                     KAPDA0177EB
                                                            MPPC module C14193-1325SA                                                                  For evaluation
                                                   The C14193-1325SA is an optical measurement module capable of detecting low level light.
                                                   It consists of an MPPC, a high-speed amplifier circuit, a high-voltage circuit, and a tempera-
                                                   ture compensation circuit. Utilizing a small pixel pitch MPPC allows high-speed measure-
                                                   ment over a wide dynamic range, making the C14193-1325SA suitable for high-speed signal
                                                   measurement such as distance measurement. The C14193-1325SA operate just by con-
                                                   necting it to an external single power supply (+5 V).
                                                                                                                          Effective
                                                                  Type No.             Built-in MPPC                                                                             Pixel pitch
                                                                                                                          photosensitive area
  6
                                                                     Photodetectors for LiDAR
Features of MPPC
                                                                          MPPC
                                                                          Photosensitive area: 105 × 105 μm
                                                                          Pixel size: 15 μm
                                                           MPPC S12571-015P
                                                           Photosensitive area: 1 × 1 mm
                                                           Pixel size: 15 μm
                                                                                                         7
                                                                                                              2
      Feature 3
Rise time vs. active area                     Fast rise time, even large active area such
                                                                                      Output ofas  1pixel
                                                                                                each  mm  vs. active area
Rise time vs. active area Output of each pixel vs. active area
                                                                                                  S13720-1325CS/PS
                             PDE (%)
                                                                               S13360-1325CS
                                                                            (Conventional type)
                                                                            Wavelength (nm)
                                                                                                                                                 KAPDB0377EA
     8
  Linearity
  Linearity
         Output current (A)
                                                                                                  KAPDB0378EA
         Dark current (A)
-5 0 5 10 15 20 25
                                                           Overvoltage (V)
                                                                                                      KAPDB0379EA
                                                                                                                                                     9
                                                                                                  KAPDB0379EA
     Rise time and recovery time
                            - Fast rise time and recovery time due to the small capacitance
                            - High repetition rate contributes to wide dynamic range
0 20 40 60 80 100
         MPPC output pulse consists of two components: fast pulse and slow pulse. Fast pulse flows through the parasitic
         capacitance between the micro cell and the surrounding metal trace. Slow pulse flows through the quenching resistance,
         recovery time of which depends on the time constant of the junction capacitance and the quenching resistance.
10
                                                                                                                                                                      Photodetectors for LiDAR
       Si APD
                                                                                             These Si APDs are designed to provide a peak sensitivity wavelength
                                                                                             suitable for optical rangefinders. These deliver faster response and lower
                                                                                             bias operation. The small, thin leadless package allows reducing the
                                                                                             mounting area on a printed circuit board.
Photo - -
Spectral responses
                                                                 (Typ. Ta=25 °C, M=100)                                                                                  (Typ. Ta=25 °C, M=100 at λ=900 nm)
                                    60                                                                                                                60
                                             S14644 series
                                    50 S14643 series                                                                                                  50
                                                                                                                                                             S14645-02/-05
                                                                                                                                                             (without filter)
           Photosensitivity (A/W)
Photosensitivity (A/W)
40 40
30 30
20 20
                                    10                 S14645 series                                                                                  10
                                                                                                                                                                        S14645-02F/-05F
                                                                                                                                                                        (with filter)
                                     0                                                                                                                 0
                                     400        600           800        1000         1200                                                             400     500     600      700     800   900   1000   1100
                                                                                                                                                                                                                         11
                                                                                                                                                                   NE
                                                                                                                                                                     XT
                                                                                                                                                                           PL
                                                                                                                                                                             AN
       Si APD array
                                                                                  The next Si APD will realize array detector designed for distance
                                                                                  measurement application, and they have peak sensitivity at near
                                                                                  infrared wavelength. The 16 ch linear array type and the 64 ch linear
                                                                                  array type are planning to be released.
                                    60
                                                        (Typ. Ta=25 °C, M=50 at 900 nm)               <16 ch type>
                                                                                                                                                 (15 ×) P0.5=7.5
                                    50                                                                                  0.5     (16 ×) 0.43 × 0.15
                                                                                                             0.15
         Photosensitivity (A/W)
                                    40
                                                                                                                                   (15 ×) 0.07
                                    30
                                                                                                      <64 ch type>
                                    20
                                                                                                                                           (63 ×) P0.23=14.49
                                                                                                            0.23      (64 ×) 0.16 × 2.5
                                    10
                                     0
                                                                                                       2.5
                                                      Wavelength (nm)
                                                                                                                          (63 ×) 0.07
                                                                                KAPDB0396EA
12
                                                                                              KAPDB0396EA
                                                                                 Photodetectors for LiDAR
   InGaAs APD
                                           G14858-0020AB is an InGaAs APD designed for distance measurement
                                           application using 1550 nm wavelength.
                                           The active area is φ0.2mm and it can provide high-speed response (typical
                                           cutoff frequency 0.9 GHz at M=10).
                                           Compared to the conventional product, dark current characteristics was
                                           drastically improved.
                                           * G14858-0020AB is lower cost version for LIDAR application.
                                                                                                                   13
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                                             0.8
                                                                                                                                                              5
                                             0.7
0.6 4
                                             0.5
                                                                                                                                                              3
                                             0.4
0.3 2
                                             0.2
                                                                                                                                                              1
                                             0.1
                                               0                                                                                                              0
                                                0.8         1.0        1.2          1.4          1.6        1.8                                                   0     10     20      30   40   50         60                   70           80
Dark current vs. reverse voltage Wavelength (µm) Reverse voltage (V)
                                                                                                                                                                                                                                                   KAPDB0418EA
                                                                                                             KAPDB0417EA
                                                                                                                                                                                                  ɸ3.0± 0.1
                                                                                                                                                                                                  Window
                                                                  (Typ. Ta=25 °C, λ=1.55 µm, -30 dBm)
                                          100 µA                                                              90                                                                             Y
                                                                                                                   KAPDB0417EA                                                                                                                       KAPDB0418EA
                                                                                                                                                                                                                                 ɸ5.4 ± 0.2
                                                              Photocurrent
                                                                                                                                                                                                                   ɸ4.7 ± 0.1
                                           10 µA                                                              80
                                                                                                                                                                                      X
                                                                                                              70
             Dark current, photocurrent
                                            1 µA
                                                                                                                                                                      Photosensitive area
                                                                                                              60
                                          100 nA                             Dark current                                                                                            ɸ0.2                            3.7 ± 0.2
                                                                                                              50
                                                                                                                                                                                                       2.6 ± 0.2
                                                                                                                     Gain
                                           10 nA
                                                                                                              40
                                            1 nA
                                                                                                              30
                                          100 pA
                                                                                                              20                                                         Photosensitive
                                                                                                                                                                         surface
                                                                             Gain
                                                                                                                                                                                                                     13 min.
10 pA 10
                                            1 pA                                                              0                                                                     ɸ0.45
                                                   0   10     20     30      40      50     60         70   80                                                                      lead
KAPDB0423EA
KAPDA0192EA
KAPDB0423EA Case
        14
                                                                                                                                                                                                                                                                 KAPDA0192EA
                                                                                                                                                      Photodetectors for LiDAR
Photo - -
Spectral responses
S13282-01CR/S14847-01CR S13645-01CR
                                                  (Typ. Ta=25 °C, M=100 at 900 nm)                                                                         (Typ. Ta=25 °C, M=50 at 840 nm)
                                  60                                                                                                     30
                                  50                                                                                                     25
         Photosensitivity (A/W)
Photosensitivity (A/W)
40 20
30 15
20 10
10 5
                                   0                                                                                                      0
                                   400      600         800          1000      1200                                                       400       600         800         1000       1200
                                                                                                                                                                                                        15
          Si PIN photodiode
                                                                                      The S13773 is a Si PIN photodiode for visible to near infrared range and is
                                                                                      compatible with lead-free solder reflow processes. The S13773 has feature
                                                                                      of high speed response time that is suitable for range finder application.
                                    0.7
                                                                                                                                                                                        (0.35)
                                                QE=100%
                                    0.6
                                                                                                                                                                     1.8
           Photosensitivity (A/W)
                                    0.5
                                                                                                                                         (0.65)
                                    0.4
                                                                                                                                (1.30 × 1.30)
0.3
                                    0.2
                                                                                                                                                                              1.4
                                    0.1
                                                                                                                                                                      0.70
                                                    Wavelength (nm)
                                                                                                                                                                              1.0
                                                                                        KPINB0406EA
                                                                                                                            Photosensitive
                                                                                                                                                                     (0.29)
surface *
                                                                                                                                                                                                  KAPINA0119EA
                                                                                                                                         1:   Tolerance unless otherwise noted: ±0.2
                                                                                                                                         2:   Values in parentheses indicate reference value.
                                                                                                                                         3:   *Package side: Wiring is exposed on A and B side.
                                                                                                                                         4:   Do not allow any conductor to make contact with
    16                                                                                    KPINB0406EA
                                                                                                                                              the package side to avoid shorting.
                                                                                                                                                        Photodetectors for LiDAR
                                                                                                                                                                             NE
                                                                                                                                                                               XT
                                                                                                                                                                                    PL
                                                                                                                                                                                      AN
Si PIN photodiode array
                                                                            The next PIN photodiode will realize array detector for distance
                                                                            measurement application. Compared to existing photodiode array,
                                                                            higher response speed is achievable. They have peak sensitivity at near
                                                                            infrared wavelength. The 16 ch linear array type and the 32 ch linear
                                                                            array type are planning to be released.
                          0.6           QE=100%
Photosensitivity (A/W)
2.0
                          0.5
                                                                                                                                           (15 ×) 0.1
                          0.4
                          0.1
                                                                                                  2.5
                            0
                            200         400         600    800       1000    1200
                                                                                                                                                                                           17
                                                    Information
Amplifier (TIA)
Transimpedance amplifiers (TIAs) are readout circuits                [Figure 1] TIA circuit diagram
that quickly convert current Isc (which occurs in the
photodiode) into voltage (Vout = -Isc × Rf). The output
represents the instantaneous value of the incident light,                                                                            Rf
within the trackable range. It is often used in the receiver                Isc
                                                                                                                  PD
front end and incident light timing detection in optical                                                                                         Vout=-Isc×Rf
communication applications. Figure 1 shows the basic
circuit structure.
Hamamatsu Photonics provides high-speed low-noise TIAs and proposes photosensor with front-end IC which
integrate such as Si PIN photodiode / APD / InGaAs photodiode and TIA in one package. Packaging these detectors
and TIA into a single device reduces parasitic capacitance and inductance and improves noise and frequency
characteristics.
In the case of a PIN-PD or APD, a DC feedback circuit can be used to eliminate background light. Figure 2 shows a
circuit example using a DC feedback circuit.
In addition, a band-pass filter can be used to cut light with wavelengths other than that used for the light source. Figure 3
shows a sensitivity measurement example of a detector with a band-pass filter.
           PD
                                                                                              50
                                                                                                   Without
                                 TIA
                                                                     Photosensitivity (A/W)
                                                                                                   band-pass filter
                                                                                              40
     Idc
                                                                                              30
                                  LPF
                                                                                              20
                              DCFB Amp                                                                            With
                                                                                                                  band-pass filter
                                                                                              10
                                                                                               0
                                                                                               400             600            800         1000   1200
Wavelength (nm)
18
                                                                       Photodetectors for LiDAR
Light source
                       Hamamatsu also provides light sources for distance measurement, LiDAR, etc.
                       (Please refer to our website:
                       http://www.hamamatsu.com/all/en/product/category/1001/1004/index.html)
                                             Peak emission
                     Peak output power                          Emitting area size       Duty ratio
         Products                             wavelength
                           (W)                                         (µm)                (%)
                                                 (nm)
Pulsed laser diode
                            20                    870             200 × 1 µm                0.1
L11649-120-04
                                                                                                      19
                                                                                                                                       Photodetectors for LiDAR
Product specifications are subject to change without prior notice due to improvements or other reasons. This document has been carefully prepared and the
information contained is believed to be accurate. In rare cases, however, there may be inaccuracies such as text errors. Before using these products, always
contact us for the delivery specification sheet to check the latest specifications.
The product warranty is valid for one year after delivery and is limited to product repair or replacement for defects discovered and reported to us within that
one year period. However, even if within the warranty period we accept absolutely no liability for any loss caused by natural disasters or improper product use.
Copying or reprinting the contents described in this material in whole or in part is prohibited without our prior permission.
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                                                                                                                                                                       KAPD0005E12 Jun. 2019
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