Simultaneous mid-infrared gas sensing and upconversion based on third harmonic generation in cascaded waveguides
Simultaneous mid-infrared gas sensing and upconversion based on third harmonic generation in cascaded waveguides
The performance of conventional gas sensors based on light absorption in the mid-infrared are limited by the high-cost and low efficiency of photon detection at these wavelengths. In this paper, cascaded suspended waveguides are proposed and analyzed for mid-infrared gas sensing with enhanced detection limit. The cascaded structure contains two sections in which the first part is optimized for light absorption and the other one is tailored to satisfy the phase matching condition for third harmonic generation toward near-infrared wavelengths. In this configuration, the input mid-infrared light firstly experiences “fingerprint” frequency absorption in the on-chip gas chamber. Consequently, the residuary light produces third harmonic radiation in the second section. Benefiting from the nonlinear relation between pump and harmonic power, the sensitivity of the sensor is significantly improved. Moreover, the signal is up converted from mid-infrared to near-infrared and thus it can be easily detected by efficient near-infrared detectors. The results show that the detection limit can reach the order of nmol/L and the absorption lengths can be reduced to three times shorter comparing to direct mid-infrared detection. The proposed configuration has great potential for high performance on-chip gas sensing.
Photonic sensor, cascaded devices, suspended waveguides, third harmonic generation
1-12
Pan, Jianxing
96318e81-826a-40c3-8a54-4b7d550b0072
Chen, Zhenxing
517a2cd7-92cb-445f-9fd5-c92e46b25955
Huang, Tianye
802c90e3-cb40-4cf2-82f5-ef60d2169bf4
Zeng, Shuwen
2810df72-f064-4c46-b6ab-790595ef866a
Cheng, Zhuo
7f3bd923-890c-4086-8cab-f6f6e515ba4c
Huang, Pan
c5f979dd-91ad-46fb-a027-4b3af8989ace
Zhao, Xiang
d3b16937-8520-43dc-bf02-3a0e0b09f784
Shum, Perry Ping
ff8c91e7-6560-468b-813d-0da021b81f04
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
April 2020
Pan, Jianxing
96318e81-826a-40c3-8a54-4b7d550b0072
Chen, Zhenxing
517a2cd7-92cb-445f-9fd5-c92e46b25955
Huang, Tianye
802c90e3-cb40-4cf2-82f5-ef60d2169bf4
Zeng, Shuwen
2810df72-f064-4c46-b6ab-790595ef866a
Cheng, Zhuo
7f3bd923-890c-4086-8cab-f6f6e515ba4c
Huang, Pan
c5f979dd-91ad-46fb-a027-4b3af8989ace
Zhao, Xiang
d3b16937-8520-43dc-bf02-3a0e0b09f784
Shum, Perry Ping
ff8c91e7-6560-468b-813d-0da021b81f04
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Pan, Jianxing, Chen, Zhenxing, Huang, Tianye, Zeng, Shuwen, Cheng, Zhuo, Huang, Pan, Zhao, Xiang, Shum, Perry Ping and Brambilla, Gilberto
(2020)
Simultaneous mid-infrared gas sensing and upconversion based on third harmonic generation in cascaded waveguides.
IEEE Photonics Journal, 12 (2), , [8972436].
(doi:10.1109/JPHOT.2020.2969975).
Abstract
The performance of conventional gas sensors based on light absorption in the mid-infrared are limited by the high-cost and low efficiency of photon detection at these wavelengths. In this paper, cascaded suspended waveguides are proposed and analyzed for mid-infrared gas sensing with enhanced detection limit. The cascaded structure contains two sections in which the first part is optimized for light absorption and the other one is tailored to satisfy the phase matching condition for third harmonic generation toward near-infrared wavelengths. In this configuration, the input mid-infrared light firstly experiences “fingerprint” frequency absorption in the on-chip gas chamber. Consequently, the residuary light produces third harmonic radiation in the second section. Benefiting from the nonlinear relation between pump and harmonic power, the sensitivity of the sensor is significantly improved. Moreover, the signal is up converted from mid-infrared to near-infrared and thus it can be easily detected by efficient near-infrared detectors. The results show that the detection limit can reach the order of nmol/L and the absorption lengths can be reduced to three times shorter comparing to direct mid-infrared detection. The proposed configuration has great potential for high performance on-chip gas sensing.
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More information
Accepted/In Press date: 23 January 2020
e-pub ahead of print date: 28 January 2020
Published date: April 2020
Additional Information:
Funding Information:
Manuscript received October 6, 2019; revised January 17, 2020; accepted January 23, 2020. Date of publication January 27, 2020; date of current version March 9, 2020. This work was supported in part by Wuhan Science and Technology Bureau under Grant 2018010401011297, in part by the Open Project Program of Wuhan National Laboratory for Optoelectronics under Grant 2019WNLOKF005, in part by the Natural Science Foundation of Hubei Province under Grant 2019CFB598, in part by the National Natural Science Foundation of China under Grant 61605179, and in part by the Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) under Grants ZL201917, G1320311998, and 1910491B06. Corresponding author: Tianye Huang (e-mail: huangty@cug.edu.cn).
Publisher Copyright:
© 2009-2012 IEEE.
Keywords:
Photonic sensor, cascaded devices, suspended waveguides, third harmonic generation
Identifiers
Local EPrints ID: 442013
URI: http://eprints.soton.ac.uk/id/eprint/442013
ISSN: 1943-0655
PURE UUID: 50d12cfd-3143-4612-9d5c-00d5ff8399a3
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Date deposited: 03 Jul 2020 16:38
Last modified: 17 Mar 2024 02:53
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Contributors
Author:
Jianxing Pan
Author:
Zhenxing Chen
Author:
Tianye Huang
Author:
Shuwen Zeng
Author:
Zhuo Cheng
Author:
Pan Huang
Author:
Xiang Zhao
Author:
Perry Ping Shum
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