凝胶基质高效可调谐固态染料激光器

采用溶胶－凝胶工艺制成激光染料掺杂有机改性凝胶玻璃。用室温下调ＱＮｄ：ＹＡＧ激光器倍频光泵浦凝 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Ｐｙｒｒｏｍｅｔｈｅｎｅ５９７染料激光器，激光输出阈值低于１０μＪ，斜率效率η＝６１％，５５０－５９４ｎｍ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＊１０＾４个（激光泵浦频

Efficient Ormosil-Host Tunable Solid-State Dye Laser

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.