Chinese Optics Letters, 2013, 11 (2): 021202, Published Online: Jan. 23, 2013
A compact interferometer insensitive to scanning speed variations Download: 3877次
120.3180 Interferometry 260.3160 Interference 120.6200 Spectrometers and spectroscopic instrumentation 300.6190 Spectrometers
Abstract
A compact moving optical-wedge interferometer (CMOWI) is presented. This device consists of a moving optical wedge (MOW), a fixed optical wedge (FOW), a fixed compensating plate, and a beam-splitting cube. The optical path difference (OPD) is calculated and analyzed. The factor between the OPD and the displacement of the MOW is less than 1 if the refractive index and wedge angle of the MOW and FOW are chosen properly. Therefore, the CMOWI is insensitive to scanning speed variations compared with the traditional Michelson interferometer. The CMOWI is compact, small-sized, and suitable for low-resolution Fourier transform spectroscopy.
Qinghua Yang, Baochang Zhao, Xiaodong Zeng. A compact interferometer insensitive to scanning speed variations[J]. Chinese Optics Letters, 2013, 11(2): 021202.