Analytical expressions for group-delay dispersion and third-order dispersion of a reflection grism-pair compressor.
Analytical expressions for group-delay dispersion and third-order dispersion of a reflection grism-pair compressor.
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DOI：
10.1364/ao.51.002747
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发表时间：
2012-05
期刊：
影响因子：
1.9
通讯作者：
Juan Su;G. Feng
中科院分区：
文献类型：
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作者：
Juan Su;G. Feng
在不考虑光栅衍射一阶近似的情况下，给出了反射式光栅对压缩器的群延迟色散（GDD）和三阶色散（TOD）的解析表达式。该解析表达式可用于设计一种无需光线追迹的色散补偿的格林函数对压缩器。此外，棱镜对压缩机的色散性能，取决于压缩机的参数，进行了全面的分析。结果表明，通过调节光束入射角、棱镜折射率、光栅常数、棱镜对间距等参数，可以获得一定的GDD和TOD。
We provide a detailed analytical expression of group-delay dispersion (GDD) and third-order dispersion (TOD) for a reflection grism-pair compressor without the first-order approximation of grating diffraction. The analytical expressions can be used to design a grism-pair compressor for compensating the dispersive material without ray tracing. Furthermore, the dispersion performance of the grism pair compressor, depending on compressor parameters, is comprehensively analyzed. Results are shown that we can adjust several parameters to obtain a certain GDD and TOD, such as the incidence angle of the beam, refractive index of the prism, grating constant, and the separation of the grism pair.