Phase-shifting characteristics of refractive index change-based phase-shifting interferometer for optical imaging applications

Seung Seok Lee; Eun Sun Kim; Hwi One Kang; Eun-Seo Choi

doi:10.1117/12.2577453

5 March 2021 Phase-shifting characteristics of refractive index change-based phase-shifting interferometer for optical imaging applications

Seung Seok Lee, Eun Sun Kim, Hwi One Kang, Eun-Seo Choi

Author Affiliations +

Proceedings Volume 11635, Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXI; 116350N (2021) https://doi.org/10.1117/12.2577453
Event: SPIE BiOS, 2021, Online Only

Abstract

We present spectral characteristics of the phase shifts in refractive index based phase-shifting interferometer. The conventional mechanical movement method cannot provide the same phase change for different wavelengths, which occurs phase information distortion in the incoherent interferometer. The refractive index-based phase-shifting method can adjust the uniform phase shift over a wide spectral window. Spectral phase-shifting errors of the proposed method were compared with those of the mechanical phase-shift method. The proposed method can be applied to eliminate unwanted phase-shifting errors and to obtain correct phase information of optical tomographic images.

Conference Presentation

Citation Download Citation

Seung Seok Lee, Eun Sun Kim, Hwi One Kang, and Eun-Seo Choi "Phase-shifting characteristics of refractive index change-based phase-shifting interferometer for optical imaging applications", Proc. SPIE 11635, Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXI, 116350N (5 March 2021); https://doi.org/10.1117/12.2577453

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