CAJ | 학술논문

利用Nd：YAG/Cr4+：YAG键合微片激光晶体研制了被动调Q大能量窄脉冲的全固态激光器，激光器采用脉冲激光二极管泵浦方式，设计了本振级和两级放大结构，分析了激光器系统的自激振荡和其抑制方法，在激光器本振级获得稳定脉冲激光输出的基础上，当两级放大器泵浦电流分别为83 A和85 A时，获得了最大单脉冲输出能量为120 mJ，脉冲宽度为1.28 ns的1064 nm激光输出，激光通过倍频后可得到65 mJ的532 nm绿光输出，其窄脉宽和高光束质量特性可为飞秒激光器啁啾放大提供良好的泵浦源。
이용Nd：YAG/Cr4+：YAG건합미편격광정체연제료피동조Q대능량착맥충적전고태격광기，격광기채용맥충격광이겁관빙포방식，설계료본진급화량급방대결구，분석료격광기계통적자격진탕화기억제방법，재격광기본진급획득은정맥충격광수출적기출상，당량급방대기빙포전류분별위83 A화85 A시，획득료최대단맥충수출능량위120 mJ，맥충관도위1.28 ns적1064 nm격광수출，격광통과배빈후가득도65 mJ적532 nm록광수출，기착맥관화고광속질량특성가위비초격광기조추방대제공량호적빙포원。
Nd:YAG/Cr4 +:YAG bonding microchip laser crystal was used to develop a passively Q-switched high pulse energy narrow pulse all solid state laser. The pulse laser diode (LD) pump was used in this all solid state laser. The structure of oscillator and twice amplifications were designed. Besides, the self-excited oscillation and the restraining method were also analyzed. On the basis of stable oscillator laser output, the 1 064 nm output laser was obtained when the electric current of twice amplifications were 83 A and 85 A, respectively. The maximum single pulse output energy of the output laser was 120 mJ and the pulse width of the output laser was 1.28 ns. A green laser which the single pulse output energy was 65 mJ and the wavelength was 532 nm was obtained by the method of frequency doubling. The characters of narrow pulse and high beam quality can be used to provide a good pumping sources for the femtosecond lasers chirped pulse amplification.