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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 7 — Apr. 1, 2013
  • pp: 1025–1027

Coherent polarization locking: an approach to mitigating optical damage in a pulsed Ho:YAG laser

L. H. Tan, C. F. Chua, and P. B. Phua  »View Author Affiliations


Optics Letters, Vol. 38, Issue 7, pp. 1025-1027 (2013)
http://dx.doi.org/10.1364/OL.38.001025


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Abstract

Intracavity optical damage is mitigated in a pulsed Ho:YAG laser cavity using the coherent polarization locking (CPL) technique. By splitting the available pump power into two individual Ho:YAG laser rods, we passively coherently locked two orthogonal polarization lasers with 9.13 mJ output pulse energies and 14 ns pulsewidths, and operating at 800 Hz repetition rate. A conventional Ho:YAG laser cavity with the same pump and cavity configuration results in severe optical damage when operating at <2kHz repetition rate, thus limiting the output pulse energies to <5mJ. We also demonstrated, to the best of our knowledge, the first pulsed operation within the entire CPL Ho:YAG laser cavity by Q-switching in one of the polarization arms, producing nanosecond pulses with no sign of pulse instability.

© 2013 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3330) Lasers and laser optics : Laser damage
(140.3298) Lasers and laser optics : Laser beam combining

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: January 25, 2013
Revised Manuscript: February 18, 2013
Manuscript Accepted: February 19, 2013
Published: March 20, 2013

Citation
L. H. Tan, C. F. Chua, and P. B. Phua, "Coherent polarization locking: an approach to mitigating optical damage in a pulsed Ho:YAG laser," Opt. Lett. 38, 1025-1027 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-7-1025

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