A full degree-of-freedom photonic crystal spatial light modulator
Abstract
Harnessing the full complexity of optical fields requires complete control of all degrees-of-freedom within a region of space and time -- an open goal for present-day spatial light modulators (SLMs), active metasurfaces, and optical phased arrays. Here, we solve this challenge with a programmable photonic crystal cavity array enabled by four key advances: (i) near-unity vertical coupling to high-finesse microcavities through inverse design, (ii) scalable fabrication by optimized, 300 mm full-wafer processing, (iii) picometer-precision resonance alignment using automated, closed-loop "holographic trimming", and (iv) out-of-plane cavity control via a high-speed micro-LED array. Combining each, we demonstrate near-complete spatiotemporal control of a 64-resonator, two-dimensional SLM with nanosecond- and femtojoule-order switching. Simultaneously operating wavelength-scale modes near the space- and time-bandwidth limits, this work opens a new regime of programmability at the fundamental limits of multimode optical control.
Keywords
Cite
@article{arxiv.2204.10302,
title = {A full degree-of-freedom photonic crystal spatial light modulator},
author = {Christopher L. Panuski and Ian R. Christen and Momchil Minkov and Cole J. Brabec and Sivan Trajtenberg-Mills and Alexander D. Griffiths and Jonathan J. D. McKendry and Gerald L. Leake and Daniel J. Coleman and Cung Tran and Jeffrey St Louis and John Mucci and Cameron Horvath and Jocelyn N. Westwood-Bachman and Stefan F. Preble and Martin D. Dawson and Michael J. Strain and Michael L. Fanto and Dirk R. Englund},
journal= {arXiv preprint arXiv:2204.10302},
year = {2022}
}
Comments
25 pages, 20 figures