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论述了啁啾脉冲放大技术中运用单光栅展宽器结构将飞秒光脉冲在时域进行啁啾展宽的原理及特性，导出了该展宽器所提供色散量的具体表达式及其展宽后激光脉冲宽度的计算；然后通过数值计算分析了其展宽因子及展宽比随各参量的之间的变化关系；本文在此基础上进一步获得了实验上的测量结果。并进行了实验验证。
The principles and characteristics of chirped broadening of femtosecond pulses in the time domain by using a single grating stretcher structure are discussed in this paper. The specific expressions of the chromatic dispersion and the broadened laser pulses Width calculation; and then through the numerical calculation and analysis of the expansion factor and aspect ratio with the relationship between the various parameters of the variation; on this basis, further experimental results were obtained. And experimental verification.