An Erbium Laser Target Illuminator Pumped by Gallium Arsenide Light Emitting Diodes.
ARMY MISSILE RESEARCH DEVELOPMENT AND ENGINEERING LAB REDSTONE ARSENAL AL PHY SICAL SCIENCES DIRECTORATE
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The design of a 1 megawatt Q-switched erbium laser range-finding or target illumination system pumped by an array of electroluminescent, amphoterically doped gallium arsenide diodes is outlined. As the absorption spectrum of the laser rod is matched with the emission spectrum of electroluminescent diodes, a conversion efficiency of electrical into lasing energy of 1 percent is achieved. No liquid or other active cooling system is required for repetition rates below 30 pulses per second. The weight of the system is estimated to be below 2.5 kilograms. Author
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