Reduction in timing jitter for a Cr:YAG Q-switched Nd:YAG laser

Brian Cole; Jonathan Lei; Tom DiLazaro; Bradley Schilling; Ward Trussell; Lew Goldberg

doi:10.1117/12.843247

17 February 2010 Reduction in timing jitter for a Cr:YAG Q-switched Nd:YAG laser

Brian Cole, Jonathan Lei, Tom DiLazaro, Bradley Schilling, Ward Trussell, Lew Goldberg

Proceedings Volume 7578, Solid State Lasers XIX: Technology and Devices; 75781Q (2010) https://doi.org/10.1117/12.843247
Event: SPIE LASE, 2010, San Francisco, California, United States

Abstract

To address the issue of pulse-to-pulse timing jitter in a passively Q-switched Cr:YAG/Nd:YAG laser, we have developed a technique for optical triggering, where the energy from a single bar diode was used to bleach a thin sheet within the Cr:YAG saturable absorber from a direction orthogonal to the lasing axis. A strong anisotropy for bleaching effect was observed; with appropriate polarization of the bleaching light the transmission through the saturable absorber was increased from 45% to 63%. This technique was applied to a monolithic Cr:YAG/Nd:YAG laser operating under steady state conditions. By placing the Q-switched pulse at the time corresponding to the steepest slope for change in transmission during bleaching, which occurs ~1μs after the bleaching diode trigger, we measured an 12.5X reduction in the pulse-to-pulse timing jitter, from 100ns for free running operation to 8ns with optical triggering.

Citation Download Citation

Brian Cole, Jonathan Lei, Tom DiLazaro, Bradley Schilling, Ward Trussell, and Lew Goldberg "Reduction in timing jitter for a Cr:YAG Q-switched Nd:YAG laser", Proc. SPIE 7578, Solid State Lasers XIX: Technology and Devices, 75781Q (17 February 2010); https://doi.org/10.1117/12.843247

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KEYWORDS

Q switched lasers

Nd:YAG lasers

Diodes

Q switches

Semiconductor lasers

Q switching

Pulsed laser operation

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