RGB Laser

This is a project to create an RGB laser capable of mixing colors at 24-bit resolution (8 bits per color), at as high of a rate as possible such that it can be scanned via galvos. This project involves the selection of appropriate single-mode diode lasers to attain good beam characteristics (in order to have the 3 colors well mixed) at the right power ratio to produce a good white point. It also involves the creation of a custom high power and high speed PWM driver for the 3 laser diodes.

Laser Diode Selection

The power ratios for the 3 lasers are as follows (taken from Chroma): 7.4 R:1.9 G:1.0 B for the wavelengths of 660, 515, and 450nm, respectively.

Red

The red diode selected is an SF-AW210 "SOC" (Short open can) diode.