15 February 2012 DPSS laser beam quality optimization through pump current tuning
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Abstract
The goal of this study is to demonstrate how a DPSS laser beam's quality parameters can be simultaneously optimized through pump current tuning. Two DPSS lasers of the same make and model were used where the laser diode pump current was first varied to ascertain the lowest RMS noise region. The lowest noise was found to be 0.13% in this region and the best M2 value of 1.0 and highest laser output power were simultaneously attained at the same current point. The laser manufacturer reported a M2 value of 1.3 and RMS noise value of .14% for these lasers. This study therefore demonstrates that pump current tuning a DPSS laser can simultaneously optimize RMS Noise, Power and M2 values. Future studies will strive to broaden the scope of the beam quality parameters impacted by current tuning.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Rob Omohundro, Rob Omohundro, Alice Callen, Alice Callen, Sydney Sukuta, Sydney Sukuta, "DPSS laser beam quality optimization through pump current tuning", Proc. SPIE 8235, Solid State Lasers XXI: Technology and Devices, 823524 (15 February 2012); doi: 10.1117/12.905789; https://doi.org/10.1117/12.905789
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