Research status of spatial Heterodyne spectroscopy – A review

As a new type of spatial modulation Fourier transform spectroscopy, spatial heterodyne spectroscopy (SHS) has the advantages of high resolution, high etendue, real-time detection, no band limitation, and no moving parts, so it has been rapidly development and widely used in the fields of trace components (OH) in atmosphere, environmental gas, chemical warfare agents, ores, industrial wastewater, pesticide residues and other fields, and has become a hot spot in related research fields. To sure that relevant practitioners have a systematics understand the development and future trend of the SHS, this paper firstly summarizes the existing spectral detection technology, secondly introduce the basic principles and research progress of SHS, thirdly introduce the basic principles and research progress of Spatial Heterodyne Raman Spectroscopy (SHRS), fourth introduce the basic principles and research progress of Planar Waveguide Spatial Heterodyne Spectroscopy (PW-SHS), fifth summarizes the influencing factors of SHS and the corresponding data processing methods, finally explores the development trend of SHS.