光谱学与光谱分析 |
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A Two-Dimensional Double Dispersed Hadamard Transform Spectrometer |
LIU Jia, SHI Lei, LI Kai, ZHENG Xin-wen, ZENG Li-bo, WU Qiong-shui* |
School of Electronic Information, Wuhan University, Wuhan 430079, China |
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Abstract A kind of two-dimensional hadamard transform spectrometer was developed. A grating was used for chromatic dispersion of orders and a prism was used for spectral dispersion. Quite different from traditional CCD detection method, a digital micromirror device (DMD) was applied for optical modulation, and a simple point detector was used as the sensor. Compared with traditional two-dimensional spectrometer, it has the advantage of high resolution and signal-noise-ratio, which was proved by theoretical calculation and computer simulation.
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Received: 2011-09-20
Accepted: 2011-12-28
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Corresponding Authors:
WU Qiong-shui
E-mail: qswu@whu.edu.cn
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