Laser Diode Module, 639 nm, 30 mW, Digital, Circular Beam

laser diode module shown with protective cap

The LQD639-30C Laser Diode Module with Digital Modulation is a self-contained LD module with superior optical quality, a very high precision current source and a PID temperature controller, built in the module. This Fabry-Perot (FP) 639 nm typical Laser Diode Module with a 30 mW circular beam comes in a self contained module. LQD Series Laser Diode Modules can be TTL modulated up to 100 MHz. To modulate the LQD Series from below-threshold to full power requires a user-supplied external 0-5 V TTL modulation signal (0 V yields full power). Download the user's manual for complete operating instructions. The modulation sources must be provided by the user. LQA-CAB cable is recommended for modulation interface between the modulation source and the diode laser module. This module requires a 5 VDC external power supply. A LPMS-5 Series Power Supply (not included) must be used with this LD module to meet CDRH requirements by providing an interlock input, key enable switch, delayed start-up, and laser active indicator. Warranty is not applicable when a custom power supply is used to drive the module.

Current Source and Temperature Control Built-in for Excellent Performance

The LQA and LQD Series include a self-contained laser diode with superior optical quality, a very high precision current source and a PID temperature controller built in the module. These laser modules are ideal for demanding experimental setups where the temperature and current control are important.

Protective rubber cap included only with Class 3B lasers and above.

Digital Modulation Versions

The LQD Series can perform digital modulation (via TTL) of up to 100 MHz. Modulating the LQD diode laser modules from below-threshold to full power requires a user-supplied external 0-5 V TTL modulation signal (0 V yields full power). Our cable is recommended as a modulation interface between the modulation source and the diode laser module.

Elliptical or Circular Beam Output

All LQA and LQD diode lasers are available either in elliptical (E versions) or circular (C versions) output beam shape. Circular beams are generated using a micro lens built in the diode laser and exhibit better quality than elliptical versions. The wavelengths indicated are typical values only, due to the nature of FP lasers.

LPMS Power Supplies Recommended for Use with Laser Diode Modules

Newport's LPMS Series Power Supplies (sold separately) are more than just power supplies. This is a key instrument that will make the LQA and LQD laser diode modules CDRH-compliant. It provides an interlock input, key enable switch, delayed start-up, and laser active indicator. The laser modules in the wavelength range of 375-473 nm require an 8/12 VDC power source. Those in the range of 635-2330 nm require a 5 VDC power source. (Note: Warranty is not applicable when a custom power supply is used to drive the laser diode module.)

Power Supplies Ordered Separately

Applications

Spectroscopy
Interferometry
Machine vision
Marking, Flow cytometry
Tissue fluorescence.

Specifications

Technical Specs

Type
Digital Modulated Laser Diode
Center Wavelength
639 nm
Center Wavelength Tolerance
±10 nm
Output Power
30 mW
Power Stability
<1% (8 hr.)
Beam Divergence Full Angle
<1.2 mrad (1/e2)
Maximum Operating Current
3000 mA
Size
Ø38.1 x 157.5 mm

Noise
<0.5%
Rise/Fall Time
2 ns
Applications
Spectroscopy, Interferometry, Machine Vision, Marking, Flow Cytometry, Tissue Fluorescence
Power Requirements
4.8 to 12 VDC
Operating Temperature
0 to 40°C

Type
Digital Modulated Laser Diode
Center Wavelength
639 nm
Center Wavelength Tolerance
±10 nm
Output Power
30 mW
Power Stability
<1% (8 hr.)
Beam Divergence Full Angle
<1.2 mrad (1/e2)
Maximum Operating Current
3000 mA
Size
Ø38.1 x 157.5 mm

Noise
<0.5%
Rise/Fall Time
2 ns
Applications
Spectroscopy, Interferometry, Machine Vision, Marking, Flow Cytometry, Tissue Fluorescence
Power Requirements
4.8 to 12 VDC
Operating Temperature
0 to 40°C

Resources & Downloads

Application Notes

Analog and Digital Modulation of LQx and DLx Series Laser Diodes(315.5 kB, PDF)

Manuals

LQx Series Laser Diode Modules User's Manual(744.2 kB, PDF)

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Compatible

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