Noise minimizing by harmonic phase diffraction gratings in off-axis lensless digital holography

V. Cazac; E. Achimova; V. Abashkin; A. Meshalkin; I. Shevkunov; V. Katkovnik

doi:10.1117/12.2323560

31 December 2018 Noise minimizing by harmonic phase diffraction gratings in off-axis lensless digital holography

V. Cazac, E. Achimova, V. Abashkin, A. Meshalkin, I. Shevkunov, V. Katkovnik

Proceedings Volume 10977, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IX; 109771Z (2018) https://doi.org/10.1117/12.2323560
Event: Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies IX, 2018, Constanta, Romania

Abstract

Off-axis lensless holography is considered with a sinusoidal phase modulation at the object plane. The variational algorithm for phase and amplitude reconstruction is based on the algorithm proposed in the paper ¹[V. Katkovnik, I. A. Shevkunov, N. V. Petrov, and K. Egiazarian, “Wavefront reconstruction in digital off-axis holography via sparse coding of amplitude and absolute phase”, Opt. Lett. 40, 2417-2420 (2015)]. The forward wavefront propagation is modelled using the Fourier transform with the angular spectrum transfer function. The multiple intensities (holograms) recorded by the sensor vary in dependence to the angle of the phase diffraction grating. The i.i.d. Gaussian noise is added to observations to make them closer to real experimental conditions. The root mean square error (RMSE) values of the phase reconstructions were compared in two scenarios: with and without the diffraction grating. Computational experiments showed that with sinusoidal phase modulation RMSE values are decreased about 20%. These results support the conclusion on advantage of the proposed phase modulation gratings in off-axis lensless digital holography.

Citation Download Citation

V. Cazac, E. Achimova, V. Abashkin, A. Meshalkin, I. Shevkunov, and V. Katkovnik "Noise minimizing by harmonic phase diffraction gratings in off-axis lensless digital holography", Proc. SPIE 10977, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IX, 109771Z (31 December 2018); https://doi.org/10.1117/12.2323560

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Digital holography

Diffraction gratings

Phase shift keying

Holograms

Phase modulation

Diffraction

Holography

Show All Keywords

Keywords/Phrases

Search In:

Publication Years