A novel and simple heterodyne interferometer scheme

Yanfen Le; Shijialuo Jin; Tao Jin

doi:10.1117/12.2586947

2 December 2020 A novel and simple heterodyne interferometer scheme

Yanfen Le, Shijialuo Jin, Tao Jin

Proceedings Volume 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics; 117171L (2020) https://doi.org/10.1117/12.2586947
Event: 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 2020, Shanghai, China

Abstract

A simple and novel heterodyne interferometer scheme with spatially separated input beams was proposed to minimize the periodic non-linearity. A polarizing beam displacer (PBD) was designed to split the input beams to parallel outputs with orthogonal polarization or combine them which provided symmetric structure for the interferometer. The novel optical setup suppressed the non-linearity caused by the frequency-mixing. Potential use in the measurement of micro displacement or vibration of the new interferometer will be demonstrated.

Citation Download Citation

Yanfen Le, Shijialuo Jin, and Tao Jin "A novel and simple heterodyne interferometer scheme", Proc. SPIE 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 117171L (2 December 2020); https://doi.org/10.1117/12.2586947

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