Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Far-field thermal emission from a semiconductor hyperbolic metamaterial

Abstract

This paper investigates the far-field thermal emission of a Si:InAs/AlSb semiconductor hyperbolic metamaterial (HMM). Understanding the thermal emission of HMMs could result in advancements in thermophotovoltaics and thermal emission management. In recent years, there has been controversy about whether the large wavevector volume plasmon polariton (VPP) modes that exist in HMMs could be outcoupled into the far field using a grating and give rise to super-Planckian thermal emission. In this experiment, gold gratings with varying periods were applied to the surface of the HMM to outcouple the VPP modes into free space. The sample was heated to 185°C, and the polarized thermal emission was measured using Fourier transform infrared spectroscopy. The HMM showed minimal angle sensitivity up to 50°. The sample showed multiple peaks in emission which corresponded to the resonant wavelengths of the VPP modes, demonstrating outcoupling from these modes. Although these modes showed increases in the emissivity, super-Planckian emission was not observed. Emission from VPP modes could be leveraged to create materials with designer emissivity profiles.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
Dynamic control of spontaneous emission rate using tunable hyperbolic metamaterials

Sandeep Kumar Chamoli, Mohamed ElKabbash, Jihua Zhang, and Chunlei Guo
Opt. Lett. 45(7) 1671-1674 (2020)

Broadband hyperbolic metamaterial covering the whole visible-light region

Rui Zang, Haibo Hu, Xiaoyun Li, Junhua Gao, Lingyan Liang, Hongliang Zhang, Fei Zhuge, Jun Luo, and Hongtao Cao
Opt. Lett. 44(12) 2970-2973 (2019)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved