A diode-pumped passively Q-switched Nd:YLF laser was demonstrated by using saturable absorber of Cr^4+:YAG. At the incident power of 7.74 W, pure passively Q-switched laser with per pulse energy of 210 μJ and puls...A diode-pumped passively Q-switched Nd:YLF laser was demonstrated by using saturable absorber of Cr^4+:YAG. At the incident power of 7.74 W, pure passively Q-switched laser with per pulse energy of 210 μJ and pulse width of 19.6 ns at repetition rate of 1.78 kHz was obtained by using Cr^4+:YAG with initial transmission of 80%. At the incident power of 8.70 W, a Q-switched mode-locking with average output power of 650 mW was achieved, the overall slop efficiency was 16%, corresponding to the initial transmission of 85% of Cr^4+ :YAG.展开更多
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 under Grant No. 60478009.
文摘A diode-pumped passively Q-switched Nd:YLF laser was demonstrated by using saturable absorber of Cr^4+:YAG. At the incident power of 7.74 W, pure passively Q-switched laser with per pulse energy of 210 μJ and pulse width of 19.6 ns at repetition rate of 1.78 kHz was obtained by using Cr^4+:YAG with initial transmission of 80%. At the incident power of 8.70 W, a Q-switched mode-locking with average output power of 650 mW was achieved, the overall slop efficiency was 16%, corresponding to the initial transmission of 85% of Cr^4+ :YAG.
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.