一种大孔径紫外傅里叶变换成像光谱仪结构研究

发布时间：2018-05-05 08:28

本文选题：光谱学 + 成像光谱仪　；参考：《光学学报》2014年03期

【摘要】：根据刑侦、物证等领域的应用要求,研制了一种工作波段为254~380nm的大孔径傅里叶变换成像光谱仪。该系统采用具有高光通量的时间-空间调制型结构以解决现有系统能量不足的问题。系统采用像平面式干涉仪与全反射式Offner成像镜相配合的方案,可实现干涉图上光程差近似线性分布。其在紫外波段最大可获得光程差与空间调制型干涉结构相同,理论最大波数分辨率为80cm-1。系统前置物镜、分光立方体为熔石英材质,成像镜为全反射系统,在全工作波段内具有较高透射率。实验结果表明,系统可获取工作波段短波端附近的原始干涉图,能正确采集及重构目标的紫外波段光谱数据立方体;在使用汞灯照明时,可正确识别365nm处发射峰。
[Abstract]:According to the requirements of criminal investigation, physical evidence and other fields, a large aperture Fourier transform imaging spectrometer with working band of 254~380nm has been developed. The system adopts a time-space modulation structure with high luminous flux to solve the problem of energy shortage in the existing system. The system adopts the scheme of image plane interferometer and full reflection Offner imaging mirror to realize the approximate linear distribution of optical path difference on interferogram. The maximum optical path difference in the ultraviolet band is the same as the spatial modulation interference structure, and the theoretical maximum wavenumber resolution is 80cm-1. The system front objective lens, the splitter cube is fused quartz material, the imaging mirror is the total reflection system, and has high transmittance in the whole working band. The experimental results show that the system can obtain the original interferogram near the short wave end of the working band, can correctly collect and reconstruct the UV spectral data cube of the target, and correctly identify the emission peak at the 365nm when using mercury lamp illumination.
【作者单位】：北京理工大学光电学院光电成像技术与系统教育部重点实验室;北京理工大学光电学院颜色科学国家重点学科实验室;
【基金】：公安部重点研究计划(2010ZDYJBJLG006) 国家科技支撑计划(2012BAK02B04)
【分类号】：TH744.1

【参考文献】