20 November 2012 Multi-frequency sweeping interferometry using spatial optical frequency modulation
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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.
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Samuel Choi, Samuel Choi, Heiichi Kato, Heiichi Kato, Osami Sasaki, Osami Sasaki, Takamasa Suzuki, 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); doi: 10.1117/12.999555; https://doi.org/10.1117/12.999555
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