论文部分内容阅读
从设计的角度研究了光泵系统的耦合效率；用国产ＬＤ实现了Ｎｄ：ＹＶＯ，激光器的高重复频率调Ｑ和单纵模预激光调Ｑ；发展了稳态锁模理论，并在国内首次报导了连续锁模ＤＰＬ的实验结果，锁模脉冲宽度为４３ｐｓ；对在较低泵浦功率下观察到的振幅调制现象提出新的物理解释。实现了钛宝石激光器的连续自锁模运转，锁模脉宽２４．６ｆｓ，并获得了ＦＷＨＭ为５３ｎｍ的稳定锁模光谱，观察到了由于热效应而造成的高阶孤子的时间演变。从理论上模拟了二介质激光放大器的工作特性；理论分析了ＣＰＡ中的若干问题，得到了ＣＰＡ中最短脉宽的解析表达式。研究了增益饱和在啁啾脉冲放大中的影响；提出了利用非共振放大的以弥补光谱畸变的技术设想。
The coupling efficiency of optical pumping system was studied from the perspective of design. Nd: YVO was achieved by domestic LD, Q and Q of single-longitudinal mode laser were modulated by high repetition rate laser, and the steady state mode-locking theory was developed. For the first time in China, The experimental results of continuous mode-locked DPL are reported, and the mode-locked pulse width is 43 ps. A new physical explanation is given for the amplitude modulation phenomenon observed at lower pump powers. A continuous self-locking mode operation of the Ti: sapphire laser was achieved. The mode-locked pulse width was 24.6fs. A stable mode-locked spectrum with a FWHM of 53nm was obtained. The temporal evolution of higher order solitons was observed due to the thermal effect. The operating characteristics of two dielectric laser amplifiers are theoretically simulated. Several problems in CPA are theoretically analyzed, and the analytical expression of the shortest pulse width in CPA is obtained. The effect of gain saturation on the amplification of chirped pulses is studied. The technical assumption of using non-resonant amplification to compensate for spectral distortion is proposed.