Estimation of objects transverse parameters in off-axis and in-line Fresnel digital holography

Pavel A. Cheremkhin; Nikolay N. Evtikhiev; Vitaly V. Krasnov; Vladislav G. Rodin; Sergey N. Starikov

doi:10.1117/12.2179134

8 May 2015 Estimation of objects transverse parameters in off-axis and in-line Fresnel digital holography

Pavel A. Cheremkhin, Nikolay N. Evtikhiev, Vitaly V. Krasnov, Vladislav G. Rodin, Sergey N. Starikov

Proceedings Volume 9508, Holography: Advances and Modern Trends IV; 95080X (2015) https://doi.org/10.1117/12.2179134
Event: SPIE Optics + Optoelectronics, 2015, Prague, Czech Republic

Abstract

In this report transverse parameters of objects registered with inline and off-axis Fresnel digital holography schemes were estimated: maximum transverse dimensions of objects, size and quantity of object resolution elements. By determining allowed locations of diffraction orders under reconstruction, new expressions for estimation of objects transverse parameters were obtained. In case of off-axis holography it is desirable that object should not overlap with zero-order and twin images. If object and twin images are located on opposite sides relative to zero-order under reconstruction, this is case of preventing of cyclic shift of twin image (PCS). If twin image is located on both sides relative to zero-order under reconstruction but don’t overlap with object image, this is case of assumption of cyclic shift of twin image (ACS). ACS case allows to register digital holograms of larger objects compared to PCS case. However, for example, for automatic image processing, separate display of object and twin images relative to zero-order is often required. It was found that ACS case allows to register holograms with distance between the object and hologram 1.5 times lesser than in PCS case. And maximum transverse dimension of object in ACS case is always greater than in PCS case by the half of hologram size. For verification of obtained estimates, off-axis digital Fresnel holograms with 2048x2048 pixels were optically registered. Contour images located behind static scatter were used as objects. Confirmations on transverse object parameters estimates, satisfying ACS and PCS cases, were derived. These results demonstrate correctness of obtained quantitative estimates.

Citation Download Citation

Pavel A. Cheremkhin, Nikolay N. Evtikhiev, Vitaly V. Krasnov, Vladislav G. Rodin, and Sergey N. Starikov "Estimation of objects transverse parameters in off-axis and in-line Fresnel digital holography", Proc. SPIE 9508, Holography: Advances and Modern Trends IV, 95080X (8 May 2015); https://doi.org/10.1117/12.2179134

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available