Open AccessSpectral resolution enhanced static Fourier transform spectrometer based on a birefringent retarder array
Author(s) -
Jie Li,
Chen Qu,
Haiying Wu,
Chun Qi
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.015505
Subject(s) - optics , spectrometer , spectral resolution , birefringence , fourier transform , detector , resolution (logic) , fourier transform spectroscopy , free spectral range , interference (communication) , prism , physics , spectral imaging , optical path , materials science , laser , fourier transform infrared spectroscopy , spectral line , computer science , telecommunications , quantum mechanics , channel (broadcasting) , astronomy , artificial intelligence
The principle and experimental demonstration of a spectral resolution enhanced static Fourier transform spectrometer (SESFTS) is presented. The device, which is based on a birefringent retarder array and a Wollaston prism, offers significant advantages over previous static Fourier transform (FT) implementations. Specifically, its use of an ultra-compact common-path interference structure creates a simple and robust spectral resolution enhanced spectrometer while preserving their high throughput and wide free spectral range. The operation principle of the device is explained in detail with a design example with a spectral resolution of 7 cm -1 , which is nearly two orders of magnitude higher than that of a conventional static FT spectrometer with a similar CCD detector. An experimental demonstration is performed by the measurement of a gas charge lamp and three diode laser sources with a SESFTS prototype working in 400-1000 nm with an approximate 25 cm -1 spectral resolution.