摘要
在千瓦级基模连续CO_2激光器谐振腔设计中,采用具有良好横模选择能力的准封离型多折腔方案,考虑到共振腔内负的气体热透镜效应,使模体积与激发体积形成良好匹配,谐振腔获得稳定的最大效益的功率输出。在此基础上采用机械斩光盘式调Q方案,调整谐振腔设计参数,补偿高功率激光窗口正的热透镜效应,获得了最大平均输出功率800W的以基模为主的CO_2调Q脉冲输出。
In designing the kW order TEM00 mode continuous wave laser unit, a quasi-sealed-off and multi-folded resonator that has the good transverse mode selection ability was developed. In order to insure the mode volume matches with the discharge volume well, the negative thennal lensing effect was taken into account, resulting in the stable output laser whose power is high enough. Based on the forgoing design, a mechanical chopper Q-switched CO: pulse laser was developed then. The resonator parameters were adjusted, including the calculation of the positive thermal lensing effect of the high power laser windows. At last, a Q-switched CO2 laser pulse with the highest average output power of 800 and TEMoo mode was obtained.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2002年第9期792-794,共3页
Chinese Journal of Lasers
基金
(原)机械工业部重点学科建设项目(94jx2097)
