| 折射率介质在制栅和云纹干涉法中的应用 |
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| 引用本文： | 张云祥,石玲,戴福隆.折射率介质在制栅和云纹干涉法中的应用[J].光学学报,1995,15(6):767-770. |
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| 作者姓名： | 张云祥 石玲 戴福隆 |
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| 作者单位： | 清华大学工程力学系 |
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| 摘 要： | 利用光在折射率介质中传播可以减小光波波长的性质，提出用折射率介质法制作高频全息光栅技术，使光栅频率突破理论极限２／λ；并将折射率介质应用于云纹干涉法中，当试件栅频率为６００１／ｍｍ时，虚栅频率可达到６０００１／ｍｍ，利用其±５级衍射光进行干涉，测量灵敏度由０．８３μｍ提高到０．１６μｍ。
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| 关 键 词： | 折射率介质，全息光栅，云纹干涉法，灵敏度 |
| 收稿时间： | 1994/3/15 |
Applications of Refractive Medium Technique in Grating Fabrication and Moire Interferometry |
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| Zhang Yunxiang, Shi Ling, Dai Fulong.Applications of Refractive Medium Technique in Grating Fabrication and Moire Interferometry[J].Acta Optica Sinica,1995,15(6):767-770. |
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| Authors: | Zhang Yunxiang Shi Ling Dai Fulong |
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| Abstract: | The wavelength of the light will shorten when it travels in the refractive medium. Based on this property, a technique for fabricating high frequency holographic gratings is developed. It makes the grating frequency breakthrough the theoretical limit of 2/λ. The refractive medium is also used in the moire interferometry. When the frequency of specimen grating is 600 lines/mm, the frequency of virtual grating will reach up to 6000 line/mm and the fringe pattern of ±5 diffraction order can be obtained with the measuring sensitivity enhanced from 0.83 μm to 0.16 μm. |
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| Keywords: | refractive medium holographic grating moire interferometry sensitivity |
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