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By using the pulse propagation equation in the nonlinear dispersive medium, the effects of second- and third-order group-velocity dispersion on pulse evolution in the stretching, amplification and compressing are studied when chirped pulse am-plification is applied to the pulses of a width <30fs, and the optimum dispersion-compensated conditions among the stretcher, amplifier and compressor are deter-mined. From the standpoint of dispersion compensation and control and the com-pressor adjustment, it is proposed that low-groove-density gratings (≤800 line/mm) are the better choices for stretching and compressing the pulses of a width <30fs in chirped-pulse amplification. It is also shown that, with a proper adjustment of the compressor incident angle and grating separation, an exact null in both second- and third-order dispersions can be achieved without any additional dispersion- compensated elements. 相似文献
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实现了环形腔掺钛蓝宝石激光器的自锁模运转,在双向同时锁模时获得宽为36fs的我没模脉冲,在单向锁模时得到脉宽为32fs的锁模脉冲,并对激光器的运转特性进行了分析。 相似文献
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