Multi-frequency sweeping interferometry using spatial optical frequency modulation

Samuel Choi; Heiichi Kato; Osami Sasaki; Takamasa Suzuki

doi:10.1117/12.999555

20 November 2012 Multi-frequency sweeping interferometry using spatial optical frequency modulation

Samuel Choi, Heiichi Kato, Osami Sasaki, Takamasa Suzuki

Proceedings Volume 8563, Optical Metrology and Inspection for Industrial Applications II; 856302 (2012) https://doi.org/10.1117/12.999555
Event: Photonics Asia, 2012, Beijing, China

Abstract

We investigated the interference amplitude and phase characteristics of a multi-frequency sweeping interferometer with sinusoidal phase modulating technique. A novel multi frequency sweeping light source that generated an interval and center frequency variable frequency comb with a bandwidth of 14 nm was demonstrated. The interference phase and amplitude distributions were investigated by observing the zeroth and first order interference signals. In addition, the zeroth and first order interference phase variations caused by center frequency sweeping were measured.

Citation Download Citation

Samuel Choi, Heiichi Kato, Osami Sasaki, and Takamasa Suzuki "Multi-frequency sweeping interferometry using spatial optical frequency modulation", Proc. SPIE 8563, Optical Metrology and Inspection for Industrial Applications II, 856302 (20 November 2012); https://doi.org/10.1117/12.999555

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