Maak P, Jakab L, Richter P, Eichler H J, Liu B
Department of Atomic Physics, Technical University of Budapest, Budafoki u. 8, H-1111 Budapest, Hungary.
Appl Opt. 2000 Jun 20;39(18):3053-9. doi: 10.1364/ao.39.003053.
A flash-lamp-pumped Er:Cr:YSGG laser at 2.79-microm wavelength has been acousto-optically Q switched. The Q-switched pulse energy and duration depend on pump pulse level and relative Q-switching time. Limits of single-pulse operation with the given acousto-optic diffraction efficiency have been determined. Resonator length, position of the Q switch, and output mirror reflectivity have been varied to obtain high pulse energy and the shortest pulse duration in the TEM00 transverse laser mode. A maximum single-pulse energy of 27 mJ and a minimum pulse duration of 120 ns were obtained with an output mirror reflectivity of approximately 25%. The highest Q-switched single-pulse energy amounted to 52% of the free-running, fundamental mode output pulse energy.
一台波长为2.79微米的闪光灯泵浦铒铬钇钪镓石榴石（Er:Cr:YSGG）激光器已实现声光调Q。调Q脉冲能量和持续时间取决于泵浦脉冲水平和相对调Q时间。已确定在给定声光衍射效率下的单脉冲操作极限。改变谐振腔长度、调Q开关位置和输出镜反射率，以在TEM00横向激光模式下获得高脉冲能量和最短脉冲持续时间。输出镜反射率约为25%时，获得了27毫焦的最大单脉冲能量和120纳秒的最小脉冲持续时间。最高调Q单脉冲能量达到自由运转基模输出脉冲能量的52%。
