We present a guided mode resonance grating that exhibits high-Q resonances with highly selective directional absorption around 3.7 μm. The grating is designed to create slow guided mode resonances with near-flat dispersion relation. Weakly coupled resonators enable such resonances with small dispersion characteristics. We study the dynamic control of directional absorption using the design presented. We show that weaker dispersion of resonance frequency allows a strong sensitivity concerning the directionality of resonance. Our results indicate that the directionality of absorption can be tuned from normal incidence (0°) to approximately 35° upon small index perturbation. The design presents a pathway toward tunable directional absorption and emission.
Skip Nav Destination
Article navigation
14 November 2022
Research Article|
November 14 2022
Directional control of absorptivity with quasi-localized guided modes Available to Purchase
A. Ghanekar
;
A. Ghanekar
a)
(Conceptualization, Formal analysis, Writing – original draft)
Ming Hsieh Department of Electrical and Computer Engineering, University of Southern California
, Los Angeles, California 90089, USA
a)Author to whom correspondence should be addressed: [email protected]
Search for other works by this author on:
R. Kapadia
;
R. Kapadia
(Funding acquisition, Writing – review & editing)
Ming Hsieh Department of Electrical and Computer Engineering, University of Southern California
, Los Angeles, California 90089, USA
Search for other works by this author on:
M. L. Povinelli
M. L. Povinelli
(Funding acquisition, Supervision, Writing – review & editing)
Ming Hsieh Department of Electrical and Computer Engineering, University of Southern California
, Los Angeles, California 90089, USA
Search for other works by this author on:
A. Ghanekar
Conceptualization, Formal analysis, Writing – original draft
a)
Ming Hsieh Department of Electrical and Computer Engineering, University of Southern California
, Los Angeles, California 90089, USA
R. Kapadia
Funding acquisition, Writing – review & editing
Ming Hsieh Department of Electrical and Computer Engineering, University of Southern California
, Los Angeles, California 90089, USA
M. L. Povinelli
Funding acquisition, Supervision, Writing – review & editing
Ming Hsieh Department of Electrical and Computer Engineering, University of Southern California
, Los Angeles, California 90089, USA
a)Author to whom correspondence should be addressed: [email protected]
Appl. Phys. Lett. 121, 201701 (2022)
Article history
Received:
August 31 2022
Accepted:
October 27 2022
Citation
A. Ghanekar, R. Kapadia, M. L. Povinelli; Directional control of absorptivity with quasi-localized guided modes. Appl. Phys. Lett. 14 November 2022; 121 (20): 201701. https://doi.org/10.1063/5.0123685
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
451
Views
Citing articles via
Roadmap on photonic metasurfaces
Sebastian A. Schulz, Rupert. F. Oulton, et al.
Hard x-ray photoemission study of bulk single-crystalline InGaZnO4
Goro Shibata, Yunosuke Takahashi, et al.
Membrane phononic crystals for high- mechanical defect modes at MHz frequencies in piezoelectric aluminum nitride
Anastasiia Ciers, Laurentius Radit Nindito, et al.