A Method to Improve Spectral Resolution for the Static Fourier Interferometer
| Autor: | 赵俊奇 Zhao Jun-qi, 刘智超 Liu Zhi-chao |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Physics
Interferometric visibility business.industry Astrophysics::Instrumentation and Methods for Astrophysics Short-time Fourier transform Michelson interferometer Interference (wave propagation) Mach–Zehnder interferometer Atomic and Molecular Physics and Optics Fourier transform spectroscopy law.invention Interferometry symbols.namesake Optics Fourier transform law symbols business |
| Zdroj: | ACTA PHOTONICA SINICA. 39:2129-2133 |
| ISSN: | 1004-4213 |
| DOI: | 10.3788/gzxb20103912.2129 |
| Popis: | In order to improve spectrum resolution with the same size of the static Fourier transform interferometer,an orthogonal-wedge static Fourier transform interferometer is designed,which is made up by the two orthogonal-wedge for continuous optical path difference.According to the derivation of the optical path difference function with the tradition static Fourier transform interferometer and the orthogonal-wedge static Fourier transform interferometer,the structure of the two orthogonal-wedge is designed to increase the effective distance of detection for improving spectrum resolution of static interferometer.The simulation results show that the maximum optical path difference of the orthogonal-wedge interferometer is 0.323 4 mm,which is four times better than the traditional interferometer with 0.080 8 mm(optical path difference).Experimental results show that the orthogonal-wedge interferometer has the distortion of the interference fringes as a result of its detection principle,so it needs to be removed and filtering of the edge of the interference fringes.Using the WQF520 type spectrometer to comparative experiment for 800nm laser,the orthogonal-wedge interferometer error is less than 1 nm.This method can effectively improve the spectral resolution of the static Fourier transform interferometer. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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