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Proceedings Paper

DPSS laser beam quality optimization through pump current tuning
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Paper 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.

Paper Details

Date Published: 15 February 2012
PDF: 13 pages
Proc. SPIE 8235, Solid State Lasers XXI: Technology and Devices, 823524 (15 February 2012); doi: 10.1117/12.905789
Show Author Affiliations
Rob Omohundro, Newport Spectra-Physics (United States)
Alice Callen, SLAC National Accelerator Lab. (United States)
Sydney Sukuta, San Jose City College (United States)


Published in SPIE Proceedings Vol. 8235:
Solid State Lasers XXI: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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