高重频、窄脉宽MOPA双波长固体激光器(特邀)

High Repetition Rate and Narrow Pulse Width MOPA Dual Wavelength Solid State Laser(Invited)

介绍了基于电光调Q与MOPA技术的高重频、窄脉宽的1 064 nm和532 nm双波长固体激光器。采用Nd:YVO晶体作为激光增益介质,加以电光调Q,得到1 064 nm本振激光输出,为获得稳定脉冲激光输出,在激光器本振级的基础之上,再将其进行两级行波放大,当两级放大级泵浦电流均为6.7 A,重复频率为10 kHz时,实现了输出功率为31.4 W,脉宽为6.2 ns的基频光输出,功率稳定性RMS为0.25%,采用腔外倍频获得16.6 W的532 nm激光输出,1 064 nm基频光到532 nm倍频光的转换效率可达53%。

A dual-wavelength solid-state laser with high repetition rate and narrow pulse width at 1 064 nm and 532 nm line of electro-optical Q-switched and master oscillator power-amplifier(MOPA) technology is introduced. Using Nd:YVOcrystal as laser gain medium and electro-optical Q-switched, the 1 064 nm local oscillator laser output is obtained, In order to obtain stable pulse laser output, on the basis of the local oscillator level of the laser, the two-stage traveling wave amplification is carried out. When two-stage amplified pump current is 6.7 A and the repetition rate is 10 kHz, the output power is 31.4 W and the pulse width is 6.2 ns. The power stability root mean square(RMS) is 0.25 %. The output power of 16.6 W 532 nm laser is obtained by extra-cavity double-frequency. The conversion efficiency from 1 064 nm fundamental light to 532 nm frequency doubling is 53%.