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476nm Laser Diode in old CNI GLP Pen Host! - Laser Pointer Forums - Discuss Laser Pointers

Years ago I got a lucky deal and picked up four Nichia "aqua" laser diodes rated at 20mW and around 476nm emission. These diodes were found to be really interesting, because when they are driven hard they emit a second 480nm line that is stronger than the 476nm line, and a diffraction grating can show this quite easily.