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Laser Diode Specs for Engineers

This document describes a 635 nm, 5 mW laser diode that outputs a single transverse mode and is suited for applications like laser levels, barcode readers, and as an optical light source. It provides specifications for the laser diode including its maximum ratings, wavelength, threshold current, operating current and voltage, beam divergence, and monitor current.

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39 views2 pages

Laser Diode Specs for Engineers

This document describes a 635 nm, 5 mW laser diode that outputs a single transverse mode and is suited for applications like laser levels, barcode readers, and as an optical light source. It provides specifications for the laser diode including its maximum ratings, wavelength, threshold current, operating current and voltage, beam divergence, and monitor current.

Uploaded by

odelaine
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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635 nm Laser Diode, 5 mW

HL6312G
Description
This 635 nm, 5 mW TO packaged laser diode is a compact light source that outputs a single transverse
mode and is suited for a variety of applications such as a laser level, bar code reader, distance meter, or a
light source for optical equipment. It is packaged in a standard Ø9 mm TO can package and has an A pin
configuration. This laser diode is compatible with our line of laser diode and TEC controllers as well as our
selection of collimation solutions and TO can laser diode mounts.

Specifications
Absolute Maximum Ratingsa
Specification Maximum
Optical Output Power, CW 5 mW
LD Reverse Voltage 2V
PD Reverse Voltage 30 V
Operating Temperature -10 °C to 50 °C
Storage Temperature -40 °C to 85 °C
a. Absolute Maximum Rating specifications should never be exceeded. Operating at
or beyond these conditions can permanently damage the laser.

HL6312G Specificationsa
Symbol Min Typical Max
b
Center Wavelength @ Pop λo 625 nm 635 nm 640 nm
Threshold Current ITH - 40 mA 70 mA
Operating Current, CW @ Popb Iop - 50 mA 85 mA
Operating Voltage @ Popb Vop - - 2.7 V
Slope Efficiency η - 0.4 mW/mA -
b
Astigmatism @ Pop As - 8 μm -
Beam Divergence Parallel θ// 5° 8° 11°
(FWHM) @ Popb Perpendicular θ⊥ 25° 31° 37°
b
Monitor Current @ Pop IPD 0.15 mA 0.25 mA 0.8 mA
a. TCASE = 25 °C if not specified.
b. Pop = 5 mW

October 6, 2023
TTN028805-S01, Rev A
www.thorlabs.com/contact
Drawing

October 6, 2023
TTN028805-S01, Rev A
www.thorlabs.com/contact

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