7 March 2014 Characterization of diode-laser stacks for high-energy-class solid state lasers
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Abstract
In this work, we present a comparative study of high power diode stacks produced by world’s leading manufacturers such as DILAS, Jenoptik, and Quantel. The diode-laser stacks are characterized by central wavelength around 939 nm, duty cycle of 1 %, and maximum repetition rate of 10 Hz. The characterization includes peak power, electrical-to-optical efficiency, central wavelength and full width at half maximum (FWHM) as a function of diode current and cooling temperature. A cross-check of measurements performed at HiLASE-IoP and Ferdinand-Braun-Institut (FBH) shows very good agreement between the results. Our study reveals also the presence of discontinuities in the spectra of two diode stacks. We consider the results presented here a valuable tool to optimize pump sources for ultra-high average power lasers, including laser fusion facilities.
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Jan Pilar, Pawel Sikocinski, Alina Pranowicz, Martin Divoky, P. Crump, R. Staske, Antonio Lucianetti, Tomas Mocek, "Characterization of diode-laser stacks for high-energy-class solid state lasers", Proc. SPIE 8965, High-Power Diode Laser Technology and Applications XII, 896516 (7 March 2014); doi: 10.1117/12.2042058; https://doi.org/10.1117/12.2042058
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