| 光谱学与光谱分析 |
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| Measuring Method of Spatial and Spectral Distribution of Hollow Cathode Lamp |
| WU Zhen-zhou，DU Xue-wei，LI Chao-yang，KE Gang-yang, WANG Qiu-ping* |
| National Laboratory of Synchrofron Radiation, University of Science and Technology of China, Hefei 230029, China |
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Abstract In the present paper, the authors propose a method to measure the spatial and spectral distribution of hollow cathode lamp by imaging spectrometer. A push-broom convex grating imaging spectrometer based on Offner system is presented, with wavelength range 400~1 000 nm, field angle 22° and spectral resolution 2~3 nm. The spatial distribution of Hg hollow cathode lamp was measured for the first time; this gives the spatial intensity distribution for different wavelengths and spectral distribution at different positions, with high spatial and spectral resolution. Also the hyperspectral data under different working current condition was obtained in order to analyze the differences of the distribution. It will be a powerful tool for the spatial and spectral properties measurement of hollow cathode lamps and other kinds of light sources.
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Received: 2011-01-18
Accepted: 2011-04-10
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Corresponding Authors:
WANG Qiu-ping
E-mail: qiuping@ustc.edu.cn
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