What is an RGB Laser Diode?
A Laser Diode is similar to an LED (light emitting diode) but its light is collimated and can be finely focused and controlled. However the light from an LED sprays out in all directions not unlike an incandescent light bulb. LEDs and laser diodes (LD) are of increasing interest to the lighting industry. Red, green and blue laser diodes are available in an increasing number of commercial packages.
White light can be created with these diodes by combining red, green, blue (RGB) in the right power ratios. Another way to make white light is to use a blue laser diode energy combined with phosphor material (often a YAG material).
The ability to create precise wavelength light and to deliver it within a collimated straight beam is impressive to me. Laser diodes bring a unique set of attributes to general illumination. Lasers enable light delivery in standard free-space configurations. They also can be easily coupled to optical fibers.
The p-n junction is the core mechanism of light generation within most laser diodes and it is a fascinating technological accomplishment. Wondering how lasers diodes work? Similar to light emitting diode (LED) which spray out light at many angles, but with added components. Watch the video below for some of the basics.
