| 光谱学与光谱分析 |
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| Research on Improving Spectrum Resolution of Optimized Wollaston Prism Array |
| ZHANG Peng1, WANG Jian-rong2，ZHANG Guo-chen2, HOU Wen1 |
1. National Key Laboratory for Electronic Measurement Technology, North University of China, Taiyuan 030051, China
2. School of Applied Science, Taiyuan University of Science and Technology, Taiyuan 030024, China |
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Abstract In order to not affect the image quality of interference fringes on the basis of the structure by increasing the structure angle of Wollaston prism to improve spectrum resolution, the authors optimized the structure of Wollaston prism. Calculating the function of the splitting angle and the structure angle, analysis indicated that taking the isosceles triangle prism with the same nature of the second wedge-shaped prism after the Wollaston prism, which makes the o and e light parallel to the optical axis, and α=0°, the imaging interference fringes are no longer affected by changes in the splitting angle. Several optimized Wollaston prisms were made as an array to improve the spectral resolution. Experiments used traditional and optimized Wollaston prism array to detect the spectrum of the 980 nm laser. Experimental data showed that using optimized Wollaston prism array gets a clearer contrast of interference fringes, and the spectral data with Fourier transform are more accurate with DSP.
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Received: 2010-11-21
Accepted: 2011-04-20
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Corresponding Authors:
ZHANG Peng
E-mail: sxyczhangpeng@126.com
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