High speed, complex wavefront shaping using the digital micro-mirror device

Abstract Digital micro-mirror devices (DMDs) have been deployed in many optical applications. As compared to spatial light modulators (SLMs), they are characterized by their much faster refresh rates (full-frame refresh rates up to 32 kHz for binary patterns) compared to 120 Hz for most liquid cryst...

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Autores principales:	Ahmed B. Ayoub, Demetri Psaltis
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/767809d9ef14461c9159da0502de9b6f
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id	oai:doaj.org-article:767809d9ef14461c9159da0502de9b6f
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spelling	oai:doaj.org-article:767809d9ef14461c9159da0502de9b6f2021-12-02T18:14:08ZHigh speed, complex wavefront shaping using the digital micro-mirror device10.1038/s41598-021-98430-w2045-2322https://doaj.org/article/767809d9ef14461c9159da0502de9b6f2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98430-whttps://doaj.org/toc/2045-2322Abstract Digital micro-mirror devices (DMDs) have been deployed in many optical applications. As compared to spatial light modulators (SLMs), they are characterized by their much faster refresh rates (full-frame refresh rates up to 32 kHz for binary patterns) compared to 120 Hz for most liquid crystal SLMs. DMDs however can only display binary, unipolar patterns and utilize temporal modulation to represent with excellent accuracy multiple gray-levels in display applications. We used the built-in time domain dynamic range representation of the DMD to project 8-bit complex-fields. With this method, we demonstrated 8-bit complex field modulation with a frame time of 38.4 ms (around 0.15 s for the entire complex-field). We performed phase conjugation by compensating the distortions incurred due to propagation through free-space and a scattering medium. For faster modulation speed, an electro-optic modulator was used in synchronization with the DMD in an amplitude modulation mode to create grayscale patterns with frame rate ~ 833 Hz with display time of only 1.2 ms instead of 38.4 ms for time multiplexing gaining a speed up by a factor of 32.Ahmed B. AyoubDemetri PsaltisNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ahmed B. Ayoub Demetri Psaltis High speed, complex wavefront shaping using the digital micro-mirror device
description	Abstract Digital micro-mirror devices (DMDs) have been deployed in many optical applications. As compared to spatial light modulators (SLMs), they are characterized by their much faster refresh rates (full-frame refresh rates up to 32 kHz for binary patterns) compared to 120 Hz for most liquid crystal SLMs. DMDs however can only display binary, unipolar patterns and utilize temporal modulation to represent with excellent accuracy multiple gray-levels in display applications. We used the built-in time domain dynamic range representation of the DMD to project 8-bit complex-fields. With this method, we demonstrated 8-bit complex field modulation with a frame time of 38.4 ms (around 0.15 s for the entire complex-field). We performed phase conjugation by compensating the distortions incurred due to propagation through free-space and a scattering medium. For faster modulation speed, an electro-optic modulator was used in synchronization with the DMD in an amplitude modulation mode to create grayscale patterns with frame rate ~ 833 Hz with display time of only 1.2 ms instead of 38.4 ms for time multiplexing gaining a speed up by a factor of 32.
format	article
author	Ahmed B. Ayoub Demetri Psaltis
author_facet	Ahmed B. Ayoub Demetri Psaltis
author_sort	Ahmed B. Ayoub
title	High speed, complex wavefront shaping using the digital micro-mirror device
title_short	High speed, complex wavefront shaping using the digital micro-mirror device
title_full	High speed, complex wavefront shaping using the digital micro-mirror device
title_fullStr	High speed, complex wavefront shaping using the digital micro-mirror device
title_full_unstemmed	High speed, complex wavefront shaping using the digital micro-mirror device
title_sort	high speed, complex wavefront shaping using the digital micro-mirror device
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/767809d9ef14461c9159da0502de9b6f
work_keys_str_mv	AT ahmedbayoub highspeedcomplexwavefrontshapingusingthedigitalmicromirrordevice AT demetripsaltis highspeedcomplexwavefrontshapingusingthedigitalmicromirrordevice
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High speed, complex wavefront shaping using the digital micro-mirror device

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