Applied Physics B

, Volume 100, Issue 4, pp 749–753 | Cite as

High-pulse-energy high-efficiency mid-infrared generation based on KTA optical parametric oscillator

  • K. Zhong
  • J. Q. Yao
  • D. G. Xu
  • J. L. Wang
  • J. S. Li
  • P. Wang
Article

Abstract

A high-energy, high-efficiency mid-infrared KTA OPO at 3.47 μm intracavity pumped by a Nd:YAG laser is presented. The maximum output energy is 31 mJ at the repetition rate of 10 Hz with a V-shaped cavity, corresponding to the absolute optical-to-optical conversion efficiency of 4.76% from the diode and the photon conversion efficiency of 87% from the fundamental to mid-infrared energy. The pulse width is 5.8 ns at the maximum output energy and the peak power reaches higher than 5 MW. The line width of the mid-infrared wave is about 1.1 nm (or 0.9 cm−1 in wave number). The output energy demonstrates good stability. To our knowledge, these are the highest pulse energy and conversion efficiency of mid-infrared OPOs using bulk nonlinear crystals in the 3–5 μm range.

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • K. Zhong
    • 1
    • 2
  • J. Q. Yao
    • 1
    • 2
  • D. G. Xu
    • 1
    • 2
  • J. L. Wang
    • 1
    • 2
  • J. S. Li
    • 1
    • 2
  • P. Wang
    • 1
    • 2
  1. 1.Institute of Laser and Optoelectronics, College of Precision Instrument and Optoelectronic EngineeringTianjin UniversityTianjinP.R. China
  2. 2.Key Laboratory of Optoelectronic Information Science and Technology, Ministry of EducationTianjin UniversityTianjinP.R. China

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