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6 May 2009 Thermally insensitive laser diode arrays
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Abstract
In this paper we present the use of high power diode arrays, spectrally stabilised using chirped Volume Bragg Gratings as a pump source for a Nd:YAG based laser. The temperature dependant performance of a series of different stabilised diodes, and the side pumped Nd:YAG slab resonator was measured over a 55°C temperature range. The best performing stabilised LDAs exhibited Q-switched output energy consistent over 80% of the temperature range, and drop off by 40% at the higher temperature extremes. Beam parameters of the laser such as divergence were found to drop in combination with input energy. Factors such as spectral drifting of the diodes are also considered and the effect on the resonator is characterised.
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Andrew White, Gavin Hall, John Barr, Mark McElhinney, Prabhu Thiagarajan, and Chuanshun Cao "Thermally insensitive laser diode arrays", Proc. SPIE 7325, Laser Technology for Defense and Security V, 73250P (6 May 2009); https://doi.org/10.1117/12.819791
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