| 啁啾超短脉冲光波照射下光栅Talbot效应的研究 |
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| 引用本文： | 王淮生. 啁啾超短脉冲光波照射下光栅Talbot效应的研究[J]. 物理学报, 2005, 54(12): 5688-5691 |
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| 作者姓名： | 王淮生 |
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| 作者单位： | 上海电力学院数理系，上海 200090 |
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| 基金项目： | 上海市自然科学基金(批准号: 04ZR14077)、上海市教育委员会教育发展基金(批准号: 04Lb07)和上海电力学院发展基金(批准号: K-2004-03)资助的课题. |
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| 摘 要： | 应用傅里叶频谱分析法，给出了光栅在啁啾超短脉冲光波照射下菲涅耳衍射方程并分析了其Talbot效应. 数值计算表明，在Talbot距离处的衍射光强不仅与照射的超短脉冲光波的宽度有关，而且与脉冲光波的啁啾有关. 根据光栅在Talbot距离处衍射光强的变化，给出了一种检验超短脉冲光波是否含有啁啾的简单方法.关键词：光栅菲涅耳衍射Talbot效应啁啾超短脉冲激光
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| 关 键 词： | 光栅 菲涅耳衍射 Talbot效应 啁啾超短脉冲激光 |
| 文章编号： | 1000-3290/2005/54（12）/5688-04 |
| 收稿时间： | 2005-02-04 |
| 修稿时间： | 2005-02-042005-06-20 |
Talbot effect of a grating under chirped ultrashort pulsed laser illumination |
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| Wang Huai-Sheng. Talbot effect of a grating under chirped ultrashort pulsed laser illumination[J]. Acta Physica Sinica, 2005, 54(12): 5688-5691 |
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| Authors: | Wang Huai-Sheng |
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| Affiliation: | Department of Mathematics and Physics, Shanghai University of Electric Power, Shanghai 200090, China |
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| Abstract: | The Fresnel diffraction equation of a grating under chirped ultrashort pulsed laser illumination is given through Fourier spectrum analysis, and the Talbot effect of the grating is studied using the equation. Numerical calculation shows that the intensity distribution of the grating at Talbot distances is related to both the width and the chirp parameter of the ultrashort pulse. According to the intensity change of the grating, a simple method is put forward to check whether an ultrashort pulsed laser contains chirp information. |
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| Keywords: | grating Fresnel diffraction Talbot effect chirped ultrashort pulsed laser |
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