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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 3, Iss. 6 — Jun. 10, 2005
  • pp: 358–360

High power 1.57-?m OPO pumped by MOPA with SBS

Youlun Ju, Baoquan Yao, and Sheng Qi  »View Author Affiliations


Chinese Optics Letters, Vol. 3, Issue 6, pp. 358-360 (2005)


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Abstract

A Nd:YAG master oscillator power amplifier (MOPA) system, pumped by a pulse flash-lamps as the pump source of optical parametric oscillator (OPO), is employed to improve the pump beam quality of OPO pump source. A back amplifying configuration with stimulated Brillouin scattering (SBS) phase conjugation mirror is used. OPO pump laser energy of 611 mJ/pulse with 30-ns pulse duration is obtained, and near diffraction limited beam quality is achieved. Based on the type II degenerate non-critically phase-matched KTP crystal, the OPO is used to convert pump beam from 1.064 ?m to 1.57 ?m, eye-safe near infrared laser range source. 1.57-?m output energy of 209 mJ/pulse with 18-ns pulse duration is attained with a short cavity KTP OPO, when pump laser energy is approximately 611 mJ. OPO conversion efficiency is up to 38.7% when pump laser energy is approximately 200 mJ.

© 2005 Chinese Optics Letters

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.5040) Nonlinear optics : Phase conjugation
(190.5940) Nonlinear optics : Self-action effects
(290.5900) Scattering : Scattering, stimulated Brillouin

Citation
Youlun Ju, Baoquan Yao, and Sheng Qi, "High power 1.57-?m OPO pumped by MOPA with SBS," Chin. Opt. Lett. 3, 358-360 (2005)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-3-6-358


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