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Nanometallic antenna assisted amorphous silicon waveguide integrated bolometer for mid-infrared

Nanometallic antenna assisted amorphous silicon waveguide integrated bolometer for mid-infrared
Nanometallic antenna assisted amorphous silicon waveguide integrated bolometer for mid-infrared

Bolometers are thermal detectors widely applied in the mid-infrared (MIR) wavelength range. In an integrated sensing system on chip, a broadband scalable bolometer absorbing the light over the whole MIR wavelength range could play an important role. In this work, we have developed a waveguide-based bolometer operating in the wavelength range of 3.72–3.88 µm on the amorphous silicon (a-Si) platform. Significant improvements in the bolometer design result in a 20× improved responsivity compared to earlier work on silicon-on-insulator (SOI). The bolometer offers 24.62% change in resistance per milliwatt of input power at 3.8 µm wavelength. The thermal conductance of the bolometer is 3.86 × 10 −5 W/K, and an improvement as large as 3 orders magnitude may be possible in the future through redesign of the device geometry.

0146-9592
677-680
Wu, Yangbo
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Qu, Zhibo
5b686d3d-a818-4322-be84-2d7e456e6c43
Osman, Ahmed
eb387b50-c718-47df-ac90-97b2efd3e335
Wei, Chen
a2efdeef-7a59-4042-aa6c-b11728ba6ba6
Cao, Wei
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Tarazona, Antulio
c6ae87c5-c746-4f89-9ff0-9e7b6874e94f
Oo, Swe Zin
6495f6da-8f17-4484-98fb-6151b4efbd9a
Chong, Harold
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Muskens, Otto
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Mashanovich, Goran
c806e262-af80-4836-b96f-319425060051
Nedeljković, Miloš
b64e21c2-1b95-479d-a35c-3456dff8c796
Wu, Yangbo
69808be6-a1e0-4622-b753-ab31a275d41a
Qu, Zhibo
5b686d3d-a818-4322-be84-2d7e456e6c43
Osman, Ahmed
eb387b50-c718-47df-ac90-97b2efd3e335
Wei, Chen
a2efdeef-7a59-4042-aa6c-b11728ba6ba6
Cao, Wei
5202fa2b-a471-45d4-84e9-9104dffdbbfc
Tarazona, Antulio
c6ae87c5-c746-4f89-9ff0-9e7b6874e94f
Oo, Swe Zin
6495f6da-8f17-4484-98fb-6151b4efbd9a
Chong, Harold
795aa67f-29e5-480f-b1bc-9bd5c0d558e1
Muskens, Otto
2284101a-f9ef-4d79-8951-a6cda5bfc7f9
Mashanovich, Goran
c806e262-af80-4836-b96f-319425060051
Nedeljković, Miloš
b64e21c2-1b95-479d-a35c-3456dff8c796

Wu, Yangbo, Qu, Zhibo, Osman, Ahmed, Wei, Chen, Cao, Wei, Tarazona, Antulio, Oo, Swe Zin, Chong, Harold, Muskens, Otto, Mashanovich, Goran and Nedeljković, Miloš (2021) Nanometallic antenna assisted amorphous silicon waveguide integrated bolometer for mid-infrared. Optics Letters, 46 (3), 677-680, [412529]. (doi:10.1364/OL.412529).

Record type: Article

Abstract

Bolometers are thermal detectors widely applied in the mid-infrared (MIR) wavelength range. In an integrated sensing system on chip, a broadband scalable bolometer absorbing the light over the whole MIR wavelength range could play an important role. In this work, we have developed a waveguide-based bolometer operating in the wavelength range of 3.72–3.88 µm on the amorphous silicon (a-Si) platform. Significant improvements in the bolometer design result in a 20× improved responsivity compared to earlier work on silicon-on-insulator (SOI). The bolometer offers 24.62% change in resistance per milliwatt of input power at 3.8 µm wavelength. The thermal conductance of the bolometer is 3.86 × 10 −5 W/K, and an improvement as large as 3 orders magnitude may be possible in the future through redesign of the device geometry.

Text
412529 - Accepted Manuscript
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More information

Accepted/In Press date: 21 December 2020
Published date: 1 February 2021
Additional Information: Funding Information: Engineering and Physical Sciences Research Council (EP/L01162X/1, EP/L021129/1, EP/N00762X/1); Royal Academy of Engineering (RF201617/16/33). Publisher Copyright: © 2021 Optical Society of America Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

Identifiers

Local EPrints ID: 446169
URI: http://eprints.soton.ac.uk/id/eprint/446169
ISSN: 0146-9592
PURE UUID: e528f600-a3a8-4732-9a0f-a9c12fe56616
ORCID for Ahmed Osman: ORCID iD orcid.org/0000-0001-6575-3861
ORCID for Wei Cao: ORCID iD orcid.org/0000-0003-1431-7060
ORCID for Harold Chong: ORCID iD orcid.org/0000-0002-7110-5761
ORCID for Otto Muskens: ORCID iD orcid.org/0000-0003-0693-5504
ORCID for Miloš Nedeljković: ORCID iD orcid.org/0000-0002-9170-7911

Catalogue record

Date deposited: 26 Jan 2021 17:30
Last modified: 29 Oct 2022 04:06

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Contributors

Author: Yangbo Wu
Author: Zhibo Qu
Author: Ahmed Osman ORCID iD
Author: Chen Wei
Author: Wei Cao ORCID iD
Author: Antulio Tarazona
Author: Swe Zin Oo
Author: Harold Chong ORCID iD
Author: Otto Muskens ORCID iD

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