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High-speed, phase-dominant spatial light modulation with silicon-based active resonant antennas

Horie, Yu and Arbabi, Amir and Arbabi, Ehsan and Kamali, Seyedeh Mahsa and Faraon, Andrei (2018) High-speed, phase-dominant spatial light modulation with silicon-based active resonant antennas. ACS Photonics, 5 (5). pp. 1711-1717. ISSN 2330-4022. doi:10.1021/acsphotonics.7b01073.

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Spatiotemporal control of optical wavefronts is of great importance in numerous free-space optical applications including imaging in 3D and through scattering media, remote sensing, and generation of various beam profiles for microscopy. Progress in these applications is currently limited due to lack of compact and high-speed spatial light modulators. Here we report an active antenna comprising a free-space coupled asymmetric Fabry–Perot resonator that produces a phase-dominant thermo-optic modulation of reflected light at frequencies approaching tens of kilohertz. As a proof of concept for spatial light modulation, we demonstrate a 6 × 6 array of such active antennas with beam deflection capability. The robust design of our silicon-based active antenna will enable large-scale integration of high-speed, phase-dominant spatial light modulators.

Item Type:Article
Related URLs:
URLURL TypeDescription Information
Horie, Yu0000-0001-7083-1270
Arbabi, Amir0000-0001-8831-7552
Arbabi, Ehsan0000-0002-5328-3863
Kamali, Seyedeh Mahsa0000-0002-6968-811X
Faraon, Andrei0000-0002-8141-391X
Additional Information:© 2017 American Chemical Society. Received: September 20, 2017; Published: November 8, 2017. This work was supported by Samsung Electronics and DARPA. The device nanofabrication was performed in the Kavli Nanoscience Institute at California Institute of Technology. Y.H. acknowledges support from a Japan Student Services Organization (JASSO) fellowship. The authors declare no competing financial interest.
Group:Kavli Nanoscience Institute
Funding AgencyGrant Number
Samsung ElectronicsUNSPECIFIED
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Japan Student Services Organization (JASSO)UNSPECIFIED
Subject Keywords:subwavelength grating, diffractive optical element, high-index contrast, spatial light modulator, silicon photonics
Issue or Number:5
Record Number:CaltechAUTHORS:20171113-101228394
Persistent URL:
Official Citation:High-Speed, Phase-Dominant Spatial Light Modulation with Silicon-Based Active Resonant Antennas. Yu Horie, Amir Arbabi, Ehsan Arbabi, Seyedeh Mahsa Kamali, and Andrei Faraon. ACS Photonics 2018 5 (5), 1711-1717. DOI: 10.1021/acsphotonics.7b01073
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:83145
Deposited By: Tony Diaz
Deposited On:14 Nov 2017 22:48
Last Modified:15 Nov 2021 19:55

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