| 光电阵列探测器对色散型光谱仪的光谱分辨极限及波长准确性的影响 |
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| 引用本文： | 胡松,陈伟民,温志渝,杨桂荣,陈刚,黄尚廉.光电阵列探测器对色散型光谱仪的光谱分辨极限及波长准确性的影响[J].光学学报,2002,22(2). |
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| 作者姓名： | 胡松 陈伟民 温志渝 杨桂荣 陈刚 黄尚廉 |
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| 作者单位： | 重庆大学光电工程学院,重庆,400044 |
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| 基金项目： | 国家自然科学基金 (6 9836 0 5 0 )，教育部科学技术基金(9910 5 )资助课题 |
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| 摘 要： | 针对光电阵列探测器对色散型光谱仪的光谱分辨极限和波长准确性可能造成的不利影响 ,分别从空域和频域两方面分析了阵列探测器的光敏元中心距、谱线的宽度及谱线与光敏元的相对位置对分辨极限及波长准确性的影响 ,并通过计算机模拟定量地给出了在不同情况下其分辨极限和波长准确性的大小 ,得出了高斯型谱线的宽度小于光敏元中心距的 5倍时 ,光谱仪系统不能同时提高其光谱分辨极限和波长准确性的结论。
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| 关 键 词： | 光谱仪器 光谱分辨极限 波长准确性 阵列器件 频谱分析 |
Influence of Photo Detecter Array on Resolution and Wavelength Accuracy of Spectrometer |
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| Hu Song,Chen Weimin,Wen Zhiyu,Yang Guirong,Chen Gang,Huang Shanglian.Influence of Photo Detecter Array on Resolution and Wavelength Accuracy of Spectrometer[J].Acta Optica Sinica,2002,22(2). |
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| Authors: | Hu Song Chen Weimin Wen Zhiyu Yang Guirong Chen Gang Huang Shanglian |
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| Abstract: | The influence of photo-detector array on the resolution and wavelength accuracy of the spectrometer is studied in both spatial-domain and frequency-domain. Main parameters of spectrometer, such as the center-distance of the photosensitive elements and width of spectral line etc., have been investigated deeply, and computational simulation is presented. A contradiction between resolution and wavelength accuracy is revealed when the width of one Gauss spectral line is less than five times of the center-distance of the photosensitive elements. The conclusion of one spectral line covering 5 sensing element is predicted. |
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| Keywords: | spectrometer resolution wavelength accuracy photo-detector array spectral analysis |
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