We simulate some laser output patterns observed in our previous experiment employing superposition of Laguerre- Gaussian modes. The rotating pattern is qualitatively analysed from the point of contemporary spatial bur...We simulate some laser output patterns observed in our previous experiment employing superposition of Laguerre- Gaussian modes. The rotating pattern is qualitatively analysed from the point of contemporary spatial burning hole effect of the lasing crystal.展开更多
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Supported by the National Natural Science Foundation of China under Grant Nos 10534020 and 60478009.
文摘We simulate some laser output patterns observed in our previous experiment employing superposition of Laguerre- Gaussian modes. The rotating pattern is qualitatively analysed from the point of contemporary spatial burning hole effect of the lasing crystal.
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.
