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Theoretical study of bicharacteristic waveguide for fundamental-mode phase-matched SHG from MIR to NIR

Theoretical study of bicharacteristic waveguide for fundamental-mode phase-matched SHG from MIR to NIR
Theoretical study of bicharacteristic waveguide for fundamental-mode phase-matched SHG from MIR to NIR

In this paper, a bicharacteristic waveguide (BW) is proposed for fundamental-mode phase-matched second harmonic generation (SHG) from mid-infrared (MIR) to near-infrared (NIR). The required phase matching condition (PMC) is satisfied between the fundamental plasmonic mode at 3100 nm and the photonic mode at 1550 nm. With 1 W pump power, the SHG conversion efficiency of 4.173% can be obtained in 90.3 μm length waveguide. Moreover, the SHG conversion can be enhanced by using a microring resonator (MRR). By optimizing the MRR, the SHG conversion efficiency is increased to 8.30%. The proposed waveguide can also provide a promising platform for upconversion detection. By using an on-chip cascaded configuration, a gas sensor with the capability of MIR absorption and NIR detection is proposed. It is found that the detection limit (DL) can reach 1.04 nmol/L with 100 mW pump power, which shows significant enhancement compared with direct MIR absorption and detection.

1094-4087
15236-15250
Huang, Tianye
802c90e3-cb40-4cf2-82f5-ef60d2169bf4
Xu, Guizhen
249964ea-5809-4048-bb3f-606de31cf078
Pan, Jianxing
96318e81-826a-40c3-8a54-4b7d550b0072
Cheng, Zhuo
7f3bd923-890c-4086-8cab-f6f6e515ba4c
Shum, Perry Ping
5c669130-28f6-4b50-8568-78e05e2ce87d
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Huang, Tianye
802c90e3-cb40-4cf2-82f5-ef60d2169bf4
Xu, Guizhen
249964ea-5809-4048-bb3f-606de31cf078
Pan, Jianxing
96318e81-826a-40c3-8a54-4b7d550b0072
Cheng, Zhuo
7f3bd923-890c-4086-8cab-f6f6e515ba4c
Shum, Perry Ping
5c669130-28f6-4b50-8568-78e05e2ce87d
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8

Huang, Tianye, Xu, Guizhen, Pan, Jianxing, Cheng, Zhuo, Shum, Perry Ping and Brambilla, Gilberto (2019) Theoretical study of bicharacteristic waveguide for fundamental-mode phase-matched SHG from MIR to NIR. Optics Express, 27 (11), 15236-15250. (doi:10.1364/OE.27.015236).

Record type: Article

Abstract

In this paper, a bicharacteristic waveguide (BW) is proposed for fundamental-mode phase-matched second harmonic generation (SHG) from mid-infrared (MIR) to near-infrared (NIR). The required phase matching condition (PMC) is satisfied between the fundamental plasmonic mode at 3100 nm and the photonic mode at 1550 nm. With 1 W pump power, the SHG conversion efficiency of 4.173% can be obtained in 90.3 μm length waveguide. Moreover, the SHG conversion can be enhanced by using a microring resonator (MRR). By optimizing the MRR, the SHG conversion efficiency is increased to 8.30%. The proposed waveguide can also provide a promising platform for upconversion detection. By using an on-chip cascaded configuration, a gas sensor with the capability of MIR absorption and NIR detection is proposed. It is found that the detection limit (DL) can reach 1.04 nmol/L with 100 mW pump power, which shows significant enhancement compared with direct MIR absorption and detection.

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oe-27-11-15236 - Version of Record
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Accepted/In Press date: 8 May 2019
e-pub ahead of print date: 13 May 2019
Published date: 27 May 2019

Identifiers

Local EPrints ID: 431788
URI: http://eprints.soton.ac.uk/id/eprint/431788
ISSN: 1094-4087
PURE UUID: 42220b9a-22da-493c-a771-e911826afca1
ORCID for Gilberto Brambilla: ORCID iD orcid.org/0000-0002-5730-0499

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Date deposited: 17 Jun 2019 16:30
Last modified: 16 Mar 2024 03:21

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Contributors

Author: Tianye Huang
Author: Guizhen Xu
Author: Jianxing Pan
Author: Zhuo Cheng
Author: Perry Ping Shum
Author: Gilberto Brambilla ORCID iD

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