InP based diode lasers are required to realize the next generation of eyesafe applications, including direct rangefinding
and HEL weapons systems. We report on the progress of high power eyesafe single spatial and longitudinal mode
1550nm MOPA devices, where we have achieved peak powers in excess of 10W with 50ns pulse widths. A conceptual
model based on our recent MOPA results show the path towards scaling to high powers based on spatial beam
combination with operating conditions suitable for direct rangefinding applications. We also report on the progress
towards high power 14xx and 15xx nm pump lasers for eyesafe HEL systems.
KEYWORDS: Semiconductor lasers, Diodes, Laser applications, High power lasers, Defense and security, Crystals, Continuous wave operation, Laser marking, RGB color model, Laser development
Compact, efficient visible lasers are important for heads up displays, pointing and illumination, undersea
communications, and less than lethal threat detection. We report on high power red, green, and blue lasers with output
powers above 3 watts and efficiencies greater than 20%, 15%, and 5% respectively.
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