High-repetition-rate Electrooptical Q-switching Technology of High-power CW Laser
According to single electrooptical effect of optical crystal, high- repetition-rate electrooptical Q-switching mechanism is studied in this paper. The relationship of Q-switching repetition frequency and output spike pulse energy, and its influence to laser beam quality are analyzed. Using the characteristics of transmitted beam phase difference which is caused by longitudinal electrooptical effect of KD ﹡P crystal have no relation with longitudinal length of crystal, miniaturized and monolithic high-repetition-rate electrooptical Q-switching element is developed. Using it to CW laser, 1000-5000Hz spike pulse laser output is realized through engaging in experiment of high-repetition-rate electrooptical Q-switching to high-power CW laser, the pulse width is 10-12ns, and a quarter-wave plate is put into lasing chamber, monomode laser output is gained. In the meantime, thermal depolarization phenomenon is inhibited. By experiment, the time curve between Q-switching repetition frequency and average output power of laser, and the influence of Q-switching repetition frequency to spike pulse width are given. The high-repetition-rate electrooptical Q-switching which studied is satisfied with actual applying requirement.
electrooptical Q-switching high-repetition-rate CW laser
Jin Guangyong Fan Wei Wang Chao Zhang Haibo Ning Guobin Liang Zhu
Laser Technology Institude,School of Science, Changchun Univ of Sci & Tech, 130022
国际会议
北京
英文
2007-08-05（万方平台首次上网日期，不代表论文的发表时间）