We demonstrate an efficient and eye-safe wavelength intracavity optical parametric oscillator （OPO）, based on a KTP crystal inside a Q-switched Nd：YVO4 laser end pumped by a fiber-coupled diode laser. In the acoust...We demonstrate an efficient and eye-safe wavelength intracavity optical parametric oscillator （OPO）, based on a KTP crystal inside a Q-switched Nd：YVO4 laser end pumped by a fiber-coupled diode laser. In the acousto-optic Q-switched operation with the pulse repetition rate of 10 kHz, a 1572-nm eye-safe laser with the average power of 237 mW at the incident pump power of 5.64 W is obtained. Under the pulse repetition rate of 5 kHz, the signal light with pulse width of 2 ns and peak power of 18.5 kW is achieved. The conversion efficiency of the average power is 4.2~0 from pump diode to OPO signal output and the signal pulse duration is about 13 times shorter than that of the depleted pump light. OCIS codes： 140.3480, 140.3580, 190.4410, 190.2620.展开更多
基金This work was supported by the National Natural Science Foundation of China (No. 60478009)Ph.D Degrees Foundation of Ministry of Education of China (No.20050445001)
文摘We demonstrate an efficient and eye-safe wavelength intracavity optical parametric oscillator （OPO）, based on a KTP crystal inside a Q-switched Nd：YVO4 laser end pumped by a fiber-coupled diode laser. In the acousto-optic Q-switched operation with the pulse repetition rate of 10 kHz, a 1572-nm eye-safe laser with the average power of 237 mW at the incident pump power of 5.64 W is obtained. Under the pulse repetition rate of 5 kHz, the signal light with pulse width of 2 ns and peak power of 18.5 kW is achieved. The conversion efficiency of the average power is 4.2~0 from pump diode to OPO signal output and the signal pulse duration is about 13 times shorter than that of the depleted pump light. OCIS codes： 140.3480, 140.3580, 190.4410, 190.2620.
