We investigate the use of volume Bragg gratings (VBGs) to achieve single longitudinal mode operation in a simple 3
mirror, diode pumped Nd:YVO4 Laser cavity at both 1064nm and 1342nm. A double VBG configuration is constructed
and shown to achieve single longitudinal mode operation with output powers of 2.3W and 2W at 1342nm and 1064nm respectively, the spectral performance of the dual VBG setup is also analyzed. In another configuration, we investigate the use of VBGs as wavelength selective elements in a dual-wavelength laser. Using this method we were able to achieve a combined output power of 3.55W at 1342 and 1064nm emission simultaneously, with a conversion efficiency of 18%.
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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