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A full degree-of-freedom spatiotemporal light modulator

Nature photonics, 2022-12, Vol.16 (12), p.834-842 [Peer Reviewed Journal]

The Author(s), under exclusive licence to Springer Nature Limited 2022. corrected publication 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. ;ISSN: 1749-4885 ;EISSN: 1749-4893 ;DOI: 10.1038/s41566-022-01086-9

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Title:
A full degree-of-freedom spatiotemporal light modulator
Author: Panuski, Christopher L. ; Christen, Ian ; Minkov, Momchil ; Brabec, Cole J. ; Trajtenberg-Mills, Sivan ; Griffiths, Alexander D. ; McKendry, Jonathan J. D. ; Leake, Gerald L. ; Coleman, Daniel J. ; Tran, Cung ; St Louis, Jeffrey ; Mucci, John ; Horvath, Cameron ; Westwood-Bachman, Jocelyn N. ; Preble, Stefan F. ; Dawson, Martin D. ; Strain, Michael J. ; Fanto, Michael L. ; Englund, Dirk R.
Subjects: Aperture ; Arrays ; Bandwidths ; Cavity resonators ; Degrees of freedom ; Design optimization ; Fabrication ; Inverse design ; Laboratories ; Microcavities ; Optical control ; Phased arrays ; Photonic crystals ; Photonics ; Spatial light modulators ; Switching
Is Part Of: Nature photonics, 2022-12, Vol.16 (12), p.834-842
Description: Harnessing the full complexity of optical fields requires the complete control of all degrees of freedom within a region of space and time—an open goal for present-day spatial light modulators, active metasurfaces and optical phased arrays. Here, we resolve this challenge with a programmable photonic crystal cavity array enabled by four key advances: (1) near-unity vertical coupling to high-finesse microcavities through inverse design; (2) scalable fabrication by optimized 300 mm full-wafer processing; (3) picometre-precision resonance alignment using automated, closed-loop ‘holographic trimming’; and (4) out-of-plane cavity control via a high-speed μLED array. Combining each, we demonstrate the near-complete spatiotemporal control of a 64 resonator, two-dimensional spatial light modulator with nanosecond- and femtojoule-order switching. Simultaneously operating wavelength-scale modes near the space–bandwidth and time–bandwidth limits, this work opens a new regime of programmability at the fundamental limits of multimode optical control.Panuski et al. demonstrate a programmable photonic crystal cavity array, enabling the spatiotemporal control of a 64 resonator, two-dimensional spatial light modulator with nanosecond- and femtojoule-order switching.
Publisher: London: Nature Publishing Group
Language: English
Identifier: ISSN: 1749-4885
EISSN: 1749-4893
DOI: 10.1038/s41566-022-01086-9
Source: ProQuest Central

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A full degree-of-freedom spatiotemporal light modulator

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