Digital holographic tomography using a light back propagation method and its application for refractive index measurement

Takanori Nomura; Takahiro Kitazawa

doi:10.1117/12.2022706

26 September 2013 Digital holographic tomography using a light back propagation method and its application for refractive index measurement

Takanori Nomura, Takahiro Kitazawa

Author Affiliations +

Proceedings Volume 8855, Optics and Photonics for Information Processing VII; 885506 (2013) https://doi.org/10.1117/12.2022706
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

A lensless digital holographic tomography using not a filtered back projection method but a light back propagation method is proposed. In the proposed method, the phase distribution on the detector is used for a light propagation. On the contrary, in the conventional method, the phase information is used for a back projection. Owing to the propagation, the deflection from a true optical path is reduced in the proposed method. For the measurement of a specimen with a huge refraction angle, it is shown that our proposed method improves on measurement accuracy compared with a conventional filtered back projection method. Numerical simulations are given to confirm the feasibility of the proposed method.

Citation Download Citation

Takanori Nomura and Takahiro Kitazawa "Digital holographic tomography using a light back propagation method and its application for refractive index measurement", Proc. SPIE 8855, Optics and Photonics for Information Processing VII, 885506 (26 September 2013); https://doi.org/10.1117/12.2022706

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