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Intracavity optical parametric oscillator at 1.57-micron wavelength pumped by passive Q-switched Nd:GdVO4 laser

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Abstract

A high-repetition-rate eye-safe optical parametric oscillator (OPO), using a non-critically phase-matched KTP crystal intracavity pumped by a passively Q-switched Nd:GdVO4/Cr4+:YAG laser, is experimentally demonstrated. The conversion efficiency for the average power is 7% from pump diode input to OPO signal output and the slope efficiency is up to 10.3%. With an incident pump power of 7.3 W, the compact intracavity OPO (IOPO) cavity, operating at 15 kHz, produces an average power of 0.57 W at 1570 nm with a pulse width as short as 6 ns. The peak power at 1570 nm is higher than 6.3 kW.

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收稿日期:2007-08-08

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高明伟:Department of Opto-Electronics Engineering, Beijing Institute of Technology, Beijing 100081
高春清:Department of Opto-Electronics Engineering, Beijing Institute of Technology, Beijing 100081
唐坤:Department of Opto-Electronics Engineering, Beijing Institute of Technology, Beijing 100081
林志峰:Department of Opto-Electronics Engineering, Beijing Institute of Technology, Beijing 100081
张秀勇:Department of Opto-Electronics Engineering, Beijing Institute of Technology, Beijing 100081

备注:M. Gao's e-mail address is ghew@bit.edu.cn.

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