637nm Lasers

What are 637nm Lasers?

637nm red laser diodes and red laser modules are available with both single-mode and multi-mode beam profiles. They have either free space or fiber coupled outputs.

The diode laser packages are ideal for OEM applications, and laser modules are available for either OEM or plug and play applications.

Filters Reset


Wavelength Selection

Power Selection






Picture Part Number Type Wavelength (nm) Output power (W) Mode Output Linewidth Pulse energy (uJ) Pulse width Rep rate
HL637: 637nm Laser Diode HL637 Single Emitter 637 0.007, 0.120, 0.250, 0.450, 1.0, 1.2 Single-Mode Lasers, Multimode Free Space
QL63F5SA QL63F5SA Single Emitter 637 0.010 Single-Mode Lasers Free Space

HL Series


The HL Series of laser diodes are available in a wide range of wavelengths from violet to red and infrared in support of a broad range of applications. These applications include display, medical, biosciences, industrial tools (sensor, leveler), machine vision, scanners, printers and a myriad of other applications being developed in the industry.