Compact eye-safe laser sources based on OPOs with KTP or PPKTP crystals

被引:10
作者
Neagu, Liviu [1 ]
Ungureanu, Constantin [1 ]
Dabu, Razvan [1 ]
Stratan, Aurel [1 ]
Fenic, Constantin [1 ]
Rusen, Laurentiu [1 ]
机构
[1] Natl Inst Lasers Plasma & Radiat Phys, Bucharest, Romania
关键词
eye safe laser radiation; nanosecond optical parametric oscillator; non-critical phase-matching;
D O I
10.1016/j.optlastec.2006.06.004
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We report on compact eye-safe nanosecond laser sources emitting in the 1.5 mu m wavelength range based on non-critically phasematched parametric interaction in optical parametric oscillators (OPOs) with KTP and periodically poled KTP (PPKTP) crystals, pumped by the fundamental frequency of Nd:YAG lasers. As much as 250 mu J signal pulse energy at 1.5 mu m wavelength, 6.5 ns FWHM pulse-width, has been obtained in a PPKTP-OPO, extracavity pumped by a Nd:YAG microlaser oscillator-amplifier at 650 mu J pump pulse energy, 8 ns pulse-width. A single signal pulse of 2.7-mJ output energy at 1.57 mu m wavelength, less than 5 ns pulse-width, was generated in a KTP-OPO, intracavity pumped by a passively Q-switched Nd:YAG laser. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:973 / 979
页数:7
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