Control of LED emission with functional dielectric metasurfaces
The improvement of light-emitting diodes (LEDs) is one of the major goals of optoelectronics and photonics research. LED integration to complex photonic devices requires precise control of the wavefront of the emitted light. Metasurfaces are spatial arrangements of engineered scatters that may enabl...
Saved in:
Main Authors: | , , , , , , , , , , |
---|---|
Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2021
|
Subjects: | |
Online Access: | https://hdl.handle.net/10356/149496 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-149496 |
---|---|
record_format |
dspace |
spelling |
sg-ntu-dr.10356-1494962021-06-01T09:26:44Z Control of LED emission with functional dielectric metasurfaces Khaidarov, Egor Liu, Zhengtong Paniagua-Domínguez, Ramón Ha, Son Tung Valuckas, Vytautas Liang, Xinan Akimov, Yuriy Bai, Ping Png, Ching Eng Demir, Hilmi Volkan Kuznetsov, Arseniy I. School of Electrical and Electronic Engineering Science::Physics::Optics and light Dielectric Metasurfaces Directional Emission The improvement of light-emitting diodes (LEDs) is one of the major goals of optoelectronics and photonics research. LED integration to complex photonic devices requires precise control of the wavefront of the emitted light. Metasurfaces are spatial arrangements of engineered scatters that may enable this light manipulation capability with unprecedented resolution. Most of these devices, however, are only able to function properly under irradiation of laser light with a large spatial coherence. LEDs, on the other hand, have angularly broad, Lambertian-like emission patterns characterized by a low spatial coherence, which makes the integration of metasurface devices on LEDs challenging. A novel concept for metasurface integration on LED is proposed, using a cavity to increase the LED spatial coherence through an angular collimation. The experimental demonstration of the proposed concept is implemented on a GaP LED architecture including a hybrid metallic-Bragg cavity. By integrating a silicon metasurface on top, two different functionalities of these compact devices are demonstrated: directional LED emission at a desired angle and LED emission of a vortex beam with an orbital angular momentum. The presented concept is general, being applicable to other incoherent light sources and enabling metasurfaces designed for plane waves to work with incoherent light emitters. Accepted version 2021-06-01T09:26:44Z 2021-06-01T09:26:44Z 2019 Journal Article Khaidarov, E., Liu, Z., Paniagua-Domínguez, R., Ha, S. T., Valuckas, V., Liang, X., Akimov, Y., Bai, P., Png, C. E., Demir, H. V. & Kuznetsov, A. I. (2019). Control of LED emission with functional dielectric metasurfaces. Laser and Photonics Reviews, 14(1), 1900235-. https://dx.doi.org/10.1002/lpor.201900235 1863-8899 0000-0002-7622-8939 https://hdl.handle.net/10356/149496 10.1002/lpor.201900235 2-s2.0-85075749671 1 14 1900235 en Laser and Photonics Reviews This is the peer reviewed version of the following article: Khaidarov, E., Liu, Z., Paniagua-Domínguez, R., Ha, S. T., Valuckas, V., Liang, X., Akimov, Y., Bai, P., Png, C. E., Demir, H. V. & Kuznetsov, A. I. (2019). Control of LED emission with functional dielectric metasurfaces. Laser and Photonics Reviews, 14(1), 1900235-. https://dx.doi.org/10.1002/lpor.201900235 , which has been published in final form at https://doi.org/10.1002/lpor.201900235. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf |
institution |
Nanyang Technological University |
building |
NTU Library |
continent |
Asia |
country |
Singapore Singapore |
content_provider |
NTU Library |
collection |
DR-NTU |
language |
English |
topic |
Science::Physics::Optics and light Dielectric Metasurfaces Directional Emission |
spellingShingle |
Science::Physics::Optics and light Dielectric Metasurfaces Directional Emission Khaidarov, Egor Liu, Zhengtong Paniagua-Domínguez, Ramón Ha, Son Tung Valuckas, Vytautas Liang, Xinan Akimov, Yuriy Bai, Ping Png, Ching Eng Demir, Hilmi Volkan Kuznetsov, Arseniy I. Control of LED emission with functional dielectric metasurfaces |
description |
The improvement of light-emitting diodes (LEDs) is one of the major goals of optoelectronics and photonics research. LED integration to complex photonic devices requires precise control of the wavefront of the emitted light. Metasurfaces are spatial arrangements of engineered scatters that may enable this light manipulation capability with unprecedented resolution. Most of these devices, however, are only able to function properly under irradiation of laser light with a large spatial coherence. LEDs, on the other hand, have angularly broad, Lambertian-like emission patterns characterized by a low spatial coherence, which makes the integration of metasurface devices on LEDs challenging. A novel concept for metasurface integration on LED is proposed, using a cavity to increase the LED spatial coherence through an angular collimation. The experimental demonstration of the proposed concept is implemented on a GaP LED architecture including a hybrid metallic-Bragg cavity. By integrating a silicon metasurface on top, two different functionalities of these compact devices are demonstrated: directional LED emission at a desired angle and LED emission of a vortex beam with an orbital angular momentum. The presented concept is general, being applicable to other incoherent light sources and enabling metasurfaces designed for plane waves to work with incoherent light emitters. |
author2 |
School of Electrical and Electronic Engineering |
author_facet |
School of Electrical and Electronic Engineering Khaidarov, Egor Liu, Zhengtong Paniagua-Domínguez, Ramón Ha, Son Tung Valuckas, Vytautas Liang, Xinan Akimov, Yuriy Bai, Ping Png, Ching Eng Demir, Hilmi Volkan Kuznetsov, Arseniy I. |
format |
Article |
author |
Khaidarov, Egor Liu, Zhengtong Paniagua-Domínguez, Ramón Ha, Son Tung Valuckas, Vytautas Liang, Xinan Akimov, Yuriy Bai, Ping Png, Ching Eng Demir, Hilmi Volkan Kuznetsov, Arseniy I. |
author_sort |
Khaidarov, Egor |
title |
Control of LED emission with functional dielectric metasurfaces |
title_short |
Control of LED emission with functional dielectric metasurfaces |
title_full |
Control of LED emission with functional dielectric metasurfaces |
title_fullStr |
Control of LED emission with functional dielectric metasurfaces |
title_full_unstemmed |
Control of LED emission with functional dielectric metasurfaces |
title_sort |
control of led emission with functional dielectric metasurfaces |
publishDate |
2021 |
url |
https://hdl.handle.net/10356/149496 |
_version_ |
1702431257248399360 |