| 拼接光栅压缩器中光栅拼缝对脉冲信噪比的影响 |
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| 引用本文： | 曹华保,卢兴强,范滇元.拼接光栅压缩器中光栅拼缝对脉冲信噪比的影响[J].光学学报,2011(10):37-41. |
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| 作者姓名： | 曹华保 卢兴强 范滇元 |
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| 作者单位： | 中国科学院上海光学精密机械研究所; |
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| 基金项目： | 国家自然科学基金(60707019)资助课题 |
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| 摘 要： | 针对平行光栅对结构的压缩器和圆形入射光束,建立了光栅拼缝所引起的光谱剪切的数学模型,并模拟了该光谱剪切对压缩脉冲信噪比的影响.与双曲正割型脉冲相比,光栅拼缝对高斯型脉冲信噪比的影响较小.随着光栅拼缝宽度的减小与光束口径的增大,压缩脉冲信噪比得到提高.对于确定的拼接光栅压缩器和光束直径,当脉冲中心波长与光谱剪切中心波长(...
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| 关 键 词： | 光栅 拼接光栅 光谱剪切 信噪比 |
Signal-to-Noise Ratio Degradation Due to the Tiled-Grating Gap |
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| Cao Huabao Lu Xingqiang Fan Dianyuan.Signal-to-Noise Ratio Degradation Due to the Tiled-Grating Gap[J].Acta Optica Sinica,2011(10):37-41. |
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| Authors: | Cao Huabao Lu Xingqiang Fan Dianyuan |
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| Institution: | Cao Huabao Lu Xingqiang Fan Dianyuan(Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China) |
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| Abstract: | The model of spectral clipping due to the tiled-grating gap of parallel grating pair compressor is established for the circular input beam,and the signal-to-noise ratio caused by the spectral clipping is simulated.Compared with sech2 pulse,the impact of tiled-grating gap on the signal-to-noise ratio of Gaussian pulse is less serious.With the tiled grating gap width decreasing and the beam diameter increasing,the signal-to-noise ratio of the compressed pulse can be improved.For a certain tiled-grating compre... |
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| Keywords: | gratings tiled-grating spectral clipping signal-to-noise ratio |
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