光学学报, 1999, 19 (6): 766, 网络出版: 2006-08-09
凝胶基质高效可调谐固态染料激光器
Efficient Ormosil-Host Tunable Solid-State Dye Laser
摘要
采用溶胶-凝胶(sol-gel)工艺制成激光染料掺杂有机改性凝胶玻璃(Ormosil)。 用室温下调Q Nd:YAG激光器倍频光(532 nm)泵浦凝胶基, 成功地获得了高转换效率、 长寿命、 可调谐固态染料激光器的激光输出。 其中SiO2-Ormosil基质Pyrromethene 597染料激光器, 激光输出阈值低于10 μJ, 斜率效率η=61%, 550~594 nm波长范围内连续可调谐, 激光输出能量下降10%所承受的激光脉冲数大于2.5×104个(激光泵浦频率1 Hz, 能量密度1 mJ/cm2)。
Abstract
Hydrophobic photostable laser dye molecules were incorporated into organically modified silicate matrices by the sol-gel technique. Successful laser oscillation of various pyrromethene dyes doped Ormosil has been achieved. Pumped with a frequency-doubled Q-switch Nd:YAG laser at 532 nm, the laser wavelength is tunable over 44 nm (550~594 nm). A slope efficiency of 61% was obtained from one of the dye-doped Ormosil in the millijoule output energy range. A useful lifetime greater than 2.5×104 pulses at a pump repetition rate of 1 Hz and a pump intensity of 1 J/cm2 was measured, with only a 10% loss in the available output energy.
张勤远, 姜中宏, 胡丽丽. 凝胶基质高效可调谐固态染料激光器[J]. 光学学报, 1999, 19(6): 766. 张勤远, 姜中宏, 胡丽丽. Efficient Ormosil-Host Tunable Solid-State Dye Laser[J]. Acta Optica Sinica, 1999, 19(6): 766.