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Proceedings Paper

Investigation of mechanically Q-switched lasers
Author(s): Brian Cole; Lew Goldberg; Nathaniel Hough; John E. Nettleton
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Paper Abstract

Using a resonant scanner mirror Q-switch to provide a time varying change in cavity alignment, 1535nm lasers based on Er/Yb-doped glass and 1064nm lasers based on Nd:YAG were evaluated. Using a side pumping architecture, the Er/Yb glass laser used a compact mechanical Q-switch with a mirror rotation rate of 330 Rad/s, enabling generation of <3 mJ pulses with a pulse width of 16ns. The laser output was a diffraction limited TEM00 mode. A mechanical Q-switch based on a MEMS tilting mirror was also used; its performance in a laser cavity was found to be similar to the resonant mirror. The technique of mechanical Q-switching was also extended to a side pumped Nd:YAG laser (mirror sweep rate of 1300 Rad/s), enabling generation of Q-switched pulses of <30mJ and 25ns duration. The far-field divergence showed this laser to be highly multi-moded within the pump plane, with a measured beam-product-parameter greater than 30 mm-mRad.

Paper Details

Date Published: 20 February 2015
PDF: 7 pages
Proc. SPIE 9342, Solid State Lasers XXIV: Technology and Devices, 93421P (20 February 2015); doi: 10.1117/12.2081256
Show Author Affiliations
Brian Cole, U.S. Army RDECOM CERDEC NVESD (United States)
Lew Goldberg, U.S. Army RDECOM CERDEC NVESD (United States)
Nathaniel Hough, U.S. Army RDECOM CERDEC NVESD (United States)
John E. Nettleton, U.S. Army RDECOM CERDEC NVESD (United States)

Published in SPIE Proceedings Vol. 9342:
Solid State Lasers XXIV: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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