Experimental evaluation of the optical quality of DMD SLM for its application as Fourier holograms displaying device

D. Yu. Molodtsov; P. A. Cheremkhin; V. V. Krasnov; V. G. Rodin

doi:10.1117/12.2229584

27 April 2016 Experimental evaluation of the optical quality of DMD SLM for its application as Fourier holograms displaying device

D. Yu. Molodtsov, P. A. Cheremkhin, V. V. Krasnov, V. G. Rodin

Author Affiliations +

Proceedings Volume 9889, Optical Modelling and Design IV; 988926 (2016) https://doi.org/10.1117/12.2229584
Event: SPIE Photonics Europe, 2016, Brussels, Belgium

Abstract

In this paper, the optical quality of micromirror DMD spatial light modulator (SLM) is evaluated and its applicability as an output device for holographic filters in dispersive correlators is analyzed. The possibility of using of DMD SLM extracted from consumer DLP-projector was experimentally evaluated by displaying of Fourier holograms. Software for displaying of holograms was developed. Experiments on holograms reconstruction was conducted with a different number of holograms pixels (and different placement on SLM). Reduction of number of pixels of output hologram (i.e. size of minimum resolvable element) led to improvement of reconstructed image quality.

The evaluation shows that not every DMD-chip has acceptable optical quality for its application as display device for Fourier holograms. It was determined that major factor of reconstructed image quality degradation is a curvature of surface of SLM or its safety glass. Ranging hologram size allowed to estimate approximate size of sufficiently flat area of SLM matrix. For tested SLM it was about 1.5 mm. Further hologram size increase led to significant reconstructed image quality degradation.

Developed and applied a technique allows to quickly estimate maximum size of holograms that can be displayed with specific SLM without significant degradation of reconstructed image. Additionally it allows to identify areas on the SLM with increased curvature of the surface.

Citation Download Citation

D. Yu. Molodtsov, P. A. Cheremkhin, V. V. Krasnov, and V. G. Rodin "Experimental evaluation of the optical quality of DMD SLM for its application as Fourier holograms displaying device", Proc. SPIE 9889, Optical Modelling and Design IV, 988926 (27 April 2016); https://doi.org/10.1117/12.2229584

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