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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 15 — May. 20, 2007
  • pp: 2975–2979

High-power high-repetition-rate UV light at 355 nm generated by a diode-end-pumped passively Q -switched Nd:YAG laser

Fu-qiang Jia, Quan Zheng, Qing-hua Xue, Yi-kun Bu, and Long-sheng Qian  »View Author Affiliations

Applied Optics, Vol. 46, Issue 15, pp. 2975-2979 (2007)

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We describe experimental results with a diode-pumped, passively Q-switched extracavity second- and third-harmonic generation. Cr:YAG is used as a saturable absorber for pulse generation. Taking into account the thermal effects of Nd:YAG at high incident pump power, we use a short plane-to-plane cavity configuration to take advantage of the maximum pump power and obtain the compactness structure. At the same time, we use the type-I critical phase-matched lithium triborate crystal to generate light at 532 nm and mix the residual fundamental at 1064 nm and the second-harmonic wave at 532 nm in the type-II critical phase-matched lithium triborate crystal for UV light generation at 355 nm . A third-harmonic-generation output power of 1.32   W is achieved at the incident pump power of 27.5   W , corresponding to an optical-to-optical efficiency of 4.8%. The instability of the UV laser power is less than 5% for 4 h.

© 2007 Optical Society of America

OCIS Codes
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.6810) Lasers and laser optics : Thermal effects
(190.2620) Nonlinear optics : Harmonic generation and mixing

ToC Category:
Lasers and Laser Optics

Original Manuscript: October 27, 2006
Revised Manuscript: January 10, 2007
Manuscript Accepted: January 10, 2007
Published: May 1, 2007

Fu-qiang Jia, Quan Zheng, Qing-hua Xue, Yi-kun Bu, and Long-sheng Qian, "High-power high-repetition-rate UV light at 355 nm generated by a diode-end-pumped passively Q-switched Nd:YAG laser," Appl. Opt. 46, 2975-2979 (2007)

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