Phase shifting interferometer based on double-frequency-grating shearing interferometer

Yeh-Wei Yu; Tsung-Yi Hou; Tsung-Hsun Yang; Ching-Cherng Sun

doi:10.1117/12.2633387

3 October 2022 Phase shifting interferometer based on double-frequency-grating shearing interferometer

Yeh-Wei Yu, Tsung-Yi Hou, Tsung-Hsun Yang, Ching-Cherng Sun

Proceedings Volume PC12229, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XVI; PC1222904 (2022) https://doi.org/10.1117/12.2633387
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Abstract

Multi-level phase encoding 2D signal is very important in the application of holographic data storage. However, conventional phase-shifting interferometry using addition reference beam suffers from the fluctuation in the phase stability, the phase-shifting, and the wavefront error of the reference beam. This paper proposes and demonstrates a pre-integral DFGSI with the utilization of a built-in phase-shifting function, to retrieve multi-level phase signals. This type of new interferometer will be helpful in optical testing in dynamic circumstances with a common path and without an additional reference wave.

Conference Presentation

Citation Download Citation

Yeh-Wei Yu, Tsung-Yi Hou, Tsung-Hsun Yang, and Ching-Cherng Sun "Phase shifting interferometer based on double-frequency-grating shearing interferometer", Proc. SPIE PC12229, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XVI, PC1222904 (3 October 2022); https://doi.org/10.1117/12.2633387

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