Characterization of 808 nm Quasi-constant Wave Laser Diode Arrays

High-power laser diode arrays are used for a variety of space-based laser programs as an energy source for diode-pumped solid-state lasers. Specifically, 1064 nm Nd:YAG lasers require laser diode arrays emitting at a wavelength of 808 nm that operate at quasi-cw peak powers of 100 Watts per bar. Reliability and performance data is needed for these components; particularly for operation in a satellite environment. To plan future laser missions, it is important to better understand these components and the effect of various environmental and operational conditions, which the laser diode arrays (LDAs) are likely to encounter. This will enable educated design trades, which are necessary to properly scope new laser instruments. This research is developing diagnostic tools, quantifying the performance of available products, and using data gathered to enable the improvement of product performance. We present measurements of LDA optical power, near field images, emission spectrum, microphotoluminescence spectrum, high-power microscope images and infrared images. We also present plans for future research. *