【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ＱＮｄＹＡＧ激光器倍频光（５３２ｎｍ）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Ｐｙｒｏｍｅｔｈｅｎｅ５９７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２．５×１０４个（激光泵浦频率１Ｈｚ，能量密度１ｍＪ／ｃｍ２）。更多还原

【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 2.5×10 4 pulses at a pump repetition rate of 1 Hz and a pump intensity of 1 J/cm 2 was measured, with only a 10% loss in the available output energy.更多还原