Very low cost LCD-based optical spatial phase modulator

Sarun Sumriddetchkajorn; Pongsakun Sriphant; Ratthasart Amarit

doi:10.1117/12.2580293

8 November 2020 Very low cost LCD-based optical spatial phase modulator

Sarun Sumriddetchkajorn, Pongsakun Sriphant, Ratthasart Amarit

Proceedings Volume 11525, SPIE Future Sensing Technologies; 1152525 (2020) https://doi.org/10.1117/12.2580293
Event: SPIE Future Sensing Technologies, 2020, Online Only

Conference Poster

Abstract

Liquid crystal display (LCD) is one of the optical devices that we see in our daily life. Its functionality is designed to operate in an amplitude modulation with up to a 32-bit resolution. As it is a low-cost spatial light modulator, this paper shows that two-dimensional (2-D) phase modulator can be obtained from this device. Experimental proof of concept using an off-the-shelf 60-USD 800x480-pixel LCD, a 633-nm wavelength laser diode, and a wavefront sensor shows that a linear 2-D phase modulator is obtained, offering a maximum 0.76-wave phase shift at a maximum grayscale value of 255. Varying digital bit control values from 0 to 255 leads to a very low optical power fluctuation of 1.53%.

Citation Download Citation

Sarun Sumriddetchkajorn, Pongsakun Sriphant, and Ratthasart Amarit "Very low cost LCD-based optical spatial phase modulator", Proc. SPIE 11525, SPIE Future Sensing Technologies, 1152525 (8 November 2020); https://doi.org/10.1117/12.2580293

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