光栅光谱仪参数的研究.pdfVIP

29 4 Vol. 29 No. 4 2008 7 Jo rnal of Applied Optics J l. 2008 : 1002-2082(2008) 04-0595-04 刘汉臣, 王秋萍, 张崇辉, 王安祥, 蒋学芳 ( , 710048) 摘　要:　光栅扫描光谱仪的入射光线和出射光线的方向 固定的, 在光栅转动下进行分光, 这与 光栅不动而入射光方向改变的分光方法不同。由光栅方程出发, 计算出电脑自动控制多光栅转动 的光谱仪测试系统的角色散率、线色散率和分辨本领, 得出光栅扫描光谱仪的角色散率、线色散率 和分辨本领等参数公式。所得结果与光栅不动而入射光方向改变的光谱仪的角色散率、线色散率 和分辨本领不同。这为光栅扫描光谱仪的使用和研究提供了理论依据。 关键词:　光栅光谱仪; 角色散率; 线色散率; 分辨率 : TN 15-3: A Investigation into parameters of grati ng scanning spectrometer LIU Han-chen, WANG Qi -ping, ZHANG Chong-h i, WANG An-xiang, JIANG X e-fang ( , , 710048, ) School of Science Xi an Polyt echnic Universit y Xi an China Abstract: The grating scanning spectrometer has incident and emergence lights w ith fixed directions. It w orks w hen its grating rotates. It s different from another light-splitting system in w hich the grating is fixed, and the direction of the incident light changes. Based on the , , eq ation of the grating the ang lar dispersive pow er line dispersive pow er and resolving pow er of the spectrometer testing system w hose grating movement w as controlled a tomatically by a comp ter w ere calc lated theoretically. The parameter form lae of the ang lar dispersive pow er , line dispersive pow er and resolving pow er of the grating scanning spectrometers w ere obtained T he calc lated res lt show s that the meas rements made by the grating scanning. spectrometers are different from those of the spectrometers w ith fixed grating . Key words : grating spectrometer ; ang lar dispersive pow er ; line dispersive po