关于激光产生自由振荡机制的研究

激光的产生是光的放大机制，它与光波的稳定性以及传播的光放大过程的传速有关，光传播过程的光放大分成∧类飞秒超短脉冲．光传播速度的调解过程中因不稳定的因素带来光传播的损失．本文重点闸述利用激光产生过程中吸收介质的饱和状态以及受迫振动状态的激发机制产生的周期性状态的无辐射振幅脉冲和连续的光泵浦无存在的结果共同来解释飞秒脉冲激光产生的自由振荡机制．

Features of the dynanfics of lasers with a saturated absorber

The dynamics of free--running lasers and lasers generating in the amplification regime are considered. It shows that the stability of a wave propagating in the amplifier depends on the wave velocity. A regular wave propagating at the superluminal velocity in class A amplifiers can lose its stability, and its propagation becomes random. The appearance of the periodic or random pulsations of the amplitude in the laser--generator with a saturated absorber operating in the hard excitation regime leads to the self --switching （or quenching） of lasing despite continuous pumping.