本文選題：光譜成像 + 法布里-珀羅干涉�。� 參考：《南京理工大學》2015年碩士論文

【摘要】：近年來,隨著科學技術的迅猛發(fā)展,成像光譜技術的應用越來越廣泛,已經從航天航空探測、目標反偽裝等軍事方面,向民用應用延伸。為滿足應用要求,成像光譜儀向高空間分辨率、小型化方向發(fā)展。因此,本文以研制可調諧法布里-珀羅干涉儀樣機為題,對三個關鍵技術進行研究,即法布里-珀羅干涉腔推掃結構設計、動鏡偏擺對復原光譜分辨率的影響以及光譜復原方法。針對法布里-珀羅干涉腔結構設計,為提高最大位移量以增加光譜分辨率,設計一種基于柔性鉸鏈技術的三角形微位移放大結構。通過建立數(shù)學模型,得到放大結構的系統(tǒng)位移放大率,并采用有限元仿真進行驗證。建立動鏡偏擺與獲取的干涉信號的模型,根據(jù)干涉成像光譜理論,得到理論光譜分辨率,并建立數(shù)學模型,針對不同情況的傾斜量進行討論,計算傾斜量對光譜分辨率的影響。采用基于相移干涉技術的檢測方法,對不同光程差下的干涉條紋圖進行采集,提取其中的相位信息,得到法布里-珀羅干涉腔動鏡的傾斜量。針對可調諧法布里-珀羅干涉儀的光譜復原,建立基于低反射率透鏡的法布里-珀羅干涉腔模型,推導出利用傅里葉變換的光譜復原方法。最后,利用非接觸式高精度電容傳感器對可調諧法布里-珀羅干涉腔推掃結構進行檢測,滿足設計要求。裝調實驗系統(tǒng),完成對激光光源以及日光燈光源的干涉條紋圖的光譜復原。
[Abstract]:In recent years, with the rapid development of science and technology, imaging spectrum technology has been applied more and more widely, which has been extended to civilian applications from military aspects such as aerospace detection, target anti-camouflage and so on. In order to meet the requirements of application, the imaging spectrometer develops towards high spatial resolution and miniaturization. Therefore, three key techniques are studied in this paper, namely, the design of push-sweep structure of Fabry-Perot interference cavity, which is based on the development of a prototype of tunable Fabry-Perot interferometer. The effect of dynamic mirror pendulum on the spectral resolution and the method of spectral restoration. Aiming at the design of Fabry-Perot interference cavity structure, a triangular micro-displacement amplification structure based on flexure hinge technology is designed to increase the maximum displacement and spectral resolution. The system displacement magnification of the amplified structure is obtained by establishing the mathematical model, and the finite element simulation is used to verify it. Based on the theory of interference imaging spectrum, the theoretical spectral resolution is obtained, and the mathematical model is established. The influence of tilt on spectral resolution is calculated. Based on phase shift interferometry, the interference fringes under different optical path differences were collected, the phase information was extracted, and the tilt of Fabry-Perot interferometer was obtained. For spectral restoration of tunable Fabry-Perot interferometer, a Fabry-Perot interference cavity model based on low reflectivity lens is established, and a spectral restoration method using Fourier transform is derived. Finally, the tunable Fabry-Perot interference cavity push-sweep structure is detected by non-contact high-precision capacitive sensor to meet the design requirements. The spectral restoration of interference fringes of laser light source and fluorescent light source is completed with the installation experiment system.
【學位授予單位】：南京理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TH744.3

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