近来对在谐振腔中引入借助AB族半介电质晶体产生的非线性光学负反馈的谐振腔Q值控制法正进行紧张的研究。它能够显著地延长脉冲激光器的振荡脉冲序列，并使振荡状态接近稳态。获得长的稳定脉冲序列使我们有可能用脉冲激光器对亚皮秒锁模染料激光器进行准稳态泵浦。用非线性光学 Recently, there has been intense research into the Q-value control of a resonator that introduces nonlinear optical negative feedback generated by means of an AB family of semi-dielectric crystals in a resonant cavity. It can significantly extend the pulsed laser pulse sequence, and the oscillation state near steady state. Obtaining a long, stable pulse train made it possible for us to quasi steady-state pumped the sub-picosecond mode-locked dye laser with a pulsed laser. With nonlinear optics