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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 10 — May. 14, 2007
  • pp: 6458–6463

Quasi-CW diode-pumped self-starting adaptive laser with self-Q-switched output

G. Smith and M. J. Damzen  »View Author Affiliations

Optics Express, Vol. 15, Issue 10, pp. 6458-6463 (2007)

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An investigation is made into a quasi-CW (QCW) diode-pumped holographic adaptive laser utilising an ultra high gain (~104) Nd:YVO4 bounce amplifier. The laser produces pulses at 1064nm with energy ~0.6mJ, duration <3ns and peak power ~200kW, with high stability, via self-Q-switching effects due to the transient dynamics of the writing and replay of the gain hologram for each pump pulse. The system produces a near-diffraction-limited output with M2<1.3 and operates with a single longitudinal mode. In a further adaptive laser configuration, the output was amplified to obtain pulses of ~5.6mJ energy, ~7ns duration and ~1MW peak power. The output spatial quality is also M2<1.3 with SLM operation. Up to 2.9mJ pulse energy of frequency doubled green (532nm) radiation is obtained, using an LBO crystal, representing ~61% conversion efficiency. This work shows that QCW diode-pumped self-adaptive holographic lasers can provide a useful source of high peak power, short duration pulses with excellent spatial quality and narrow linewidth spectrum.

© 2007 Optical Society of America

OCIS Codes
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.3580) Lasers and laser optics : Lasers, solid-state
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.5040) Nonlinear optics : Phase conjugation

ToC Category:
Lasers and Laser Optics

Original Manuscript: February 9, 2007
Revised Manuscript: March 27, 2007
Manuscript Accepted: March 28, 2007
Published: May 11, 2007

G. Smith and M. J. Damzen, "Quasi-CW diode-pumped self-starting adaptive laser with self-Q-switched output," Opt. Express 15, 6458-6463 (2007)

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