共查询到14条相似文献,搜索用时 78 毫秒
1.
2.
3.
4.
利用表面放电光泵浦技术,研制了重频XeF(C-A)激光器,运行频率达到10 Hz。研究了运行频率、气体流量对激光输出能量稳定性的影响,分析了影响输出稳定性的主要因素,实验结果表明,提高气流量可有效改善重频输出能量的稳定性。同时,还给出了优化实验条件下不同运行频率连续20个脉冲较为理想的输出结果。运行频率分别为1,2,5 Hz时,输出能量稳定性较好,输出能量大于4.0 J;气流量大于53 L/s时,10 Hz重频运行的输出稳定性已显著提高,平均输出能量也达到1.8 J。 相似文献
5.
利用表面放电光泵浦技术,研制了重频XeF(C-A)激光器,运行频率达到10 Hz。研究了运行频率、气体流量对激光输出能量稳定性的影响,分析了影响输出稳定性的主要因素,实验结果表明,提高气流量可有效改善重频输出能量的稳定性。同时,还给出了优化实验条件下不同运行频率连续20个脉冲较为理想的输出结果。运行频率分别为1,2,5 Hz时,输出能量稳定性较好,输出能量大于4.0 J;气流量大于53 L/s时,10 Hz重频运行的输出稳定性已显著提高,平均输出能量也达到1.8 J。 相似文献
6.
7.
8.
9.
10.
焦耳量级光抽运XeF蓝绿激光器 总被引:4,自引:0,他引:4
阐述了焦耳量级XeF(C-A)激光器的总体设计及抽运源辐射能力的测试方法,分析了XeF(C-A)激光特性参量与XeF2初始浓度、输出透过率以及气体成分之间的关系。抽运源采用紧凑型结构,有效地减小了放电回路面积,使回路电感降低到330nH,从而使放电沉积效率达到74%,抽运源平均沉积功率密度达到12MW/cm。利用分幅相机拍摄了XeF2光解离波并对抽运源辐射能力进行了诊断,抽运源辐射在140~170nm波段的光子出射通量达到5×1023s-1.cm-2,辐射亮度温度高于25kK。激光器有效激活长度80cm,采用平凹谐振腔,激光器获得了稳定的焦耳级能量输出,最大输出能量2.5J,总转换效率0.1%,激光脉宽约为700ns。 相似文献
11.
A dielectric laser cavity of 1 cm length has been optimized for high gain (7 cm–1) operation which is achieved in XeF doped Ar crystals. Mode structures on the C-A spectral distribution around 540 nm and far field transverse mode patterns are reported. Photchemical gain burning is observed in the spectral mode structures. The dependence of the laser threshold on pump energy, pumped length and on cavity losses is studied. XeF densities of 7×1017 cm–3 and distributed losses of 1.2 cm–1 are derived. The measured quantum efficiency of 14% and the saturation behaviour are consistently described. Losses by transient aborption and two photon absorption are discussed. 相似文献
12.
An optically pumped XeF(C-A) laser with 0.1-1 Hz pulse-repetition mode is demonstrated. The maximum output energy is up to 18.7 J, which corresponds to the conversion efficiency of the stored electrical energy to laser output energy of 0.25%. The laser active medium is optically excited by vacuum-ultraviolet radiation of two single-channel surface discharges initiated along opposite walls of the laser cell. The laser resonator output coupling is 10%, and the initial XeF2 concentration in the active gas mixture is ~1 x 10(17) cm(-3). The duration of the observed laser pulses is 0.8 to 1.2 micros, and the spectral band is 470-500 nm. 相似文献
13.