Extraordinary enhancement of nonlinear optical interaction in NbOBr2 microcavities
2D materials are burgeoning as promising candidates for investigating nonlinear optical effects due to high nonlinear susceptibilities, broadband optical response, and tunable nonlinearity. However, most 2D materials suffer from poor nonlinear conversion efficiencies, resulting from reduced light-ma...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/175582 |
| _version_ | 1826121607756644352 |
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| author | Chen, Wenduo Zhu, Song Duan, Ruihuan Wang, Chongwu Wang, Fakun Wu, Yao Dai, Mingjin Cui, Jieyuan Chae, Sang Hoon Li, Zhipeng Ma, Xuezhi Wang, Qian Liu, Zheng Wang, Qi Jie |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Chen, Wenduo Zhu, Song Duan, Ruihuan Wang, Chongwu Wang, Fakun Wu, Yao Dai, Mingjin Cui, Jieyuan Chae, Sang Hoon Li, Zhipeng Ma, Xuezhi Wang, Qian Liu, Zheng Wang, Qi Jie |
| author_sort | Chen, Wenduo |
| collection | NTU |
| description | 2D materials are burgeoning as promising candidates for investigating nonlinear optical effects due to high nonlinear susceptibilities, broadband optical response, and tunable nonlinearity. However, most 2D materials suffer from poor nonlinear conversion efficiencies, resulting from reduced light-matter interactions and lack of phase matching at atomic thicknesses. Herein, a new 2D nonlinear material, niobium oxide dibromide (NbOBr2) is reported, featuring strong and anisotropic optical nonlinearities with scalable nonlinear intensity. Furthermore, Fabry-Pérot (F-P) microcavities are constructed by coupling NbOBr2 with air holes in silicon. Remarkable enhancement factors of ≈630 times in second harmonic generation (SHG) and 210 times in third harmonic generation (THG) are achieved on cavity at the resonance wavelength of 1500 nm. Notably, the cavity enhancement effect exhibits strong anisotropic feature tunable with pump wavelength, owing to the robust optical birefringence of NbOBr2. The ratio of the enhancement factor along the b- and c-axis of NbOBr2 reaches 2.43 and 5.27 for SHG and THG at 1500 nm pump, respectively, which leads to an extraordinarily high SHG anisotropic ratio of 17.82 and a 10° rotation of THG polarization. The research presents a feasible and practical strategy for developing high-efficiency and low-power-pumped on-chip nonlinear optical devices with tunable anisotropy. |
| first_indexed | 2024-10-01T05:35:00Z |
| format | Journal Article |
| id | ntu-10356/175582 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:35:00Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1755822024-07-26T15:40:08Z Extraordinary enhancement of nonlinear optical interaction in NbOBr2 microcavities Chen, Wenduo Zhu, Song Duan, Ruihuan Wang, Chongwu Wang, Fakun Wu, Yao Dai, Mingjin Cui, Jieyuan Chae, Sang Hoon Li, Zhipeng Ma, Xuezhi Wang, Qian Liu, Zheng Wang, Qi Jie School of Electrical and Electronic Engineering School of Materials Science and Engineering Physics Photonics Fabry-Pérot microcavit 2D materials are burgeoning as promising candidates for investigating nonlinear optical effects due to high nonlinear susceptibilities, broadband optical response, and tunable nonlinearity. However, most 2D materials suffer from poor nonlinear conversion efficiencies, resulting from reduced light-matter interactions and lack of phase matching at atomic thicknesses. Herein, a new 2D nonlinear material, niobium oxide dibromide (NbOBr2) is reported, featuring strong and anisotropic optical nonlinearities with scalable nonlinear intensity. Furthermore, Fabry-Pérot (F-P) microcavities are constructed by coupling NbOBr2 with air holes in silicon. Remarkable enhancement factors of ≈630 times in second harmonic generation (SHG) and 210 times in third harmonic generation (THG) are achieved on cavity at the resonance wavelength of 1500 nm. Notably, the cavity enhancement effect exhibits strong anisotropic feature tunable with pump wavelength, owing to the robust optical birefringence of NbOBr2. The ratio of the enhancement factor along the b- and c-axis of NbOBr2 reaches 2.43 and 5.27 for SHG and THG at 1500 nm pump, respectively, which leads to an extraordinarily high SHG anisotropic ratio of 17.82 and a 10° rotation of THG polarization. The research presents a feasible and practical strategy for developing high-efficiency and low-power-pumped on-chip nonlinear optical devices with tunable anisotropy. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) National Medical Research Council (NMRC) National Research Foundation (NRF) Submitted/Accepted version This research wassupported by the National Research Foundation Singapore program (NRF-CRP22-2019-0007, NRF-CRP26-2021-0004 and NRF-CRP23-2019-0007),the Ministry of Education Tier 2 program (MOE-T2EP50120-0009), Singa-pore A*STAR funding (A2090b0144, R22I0IR122, and M22K2c0080), theSingapore Ministry of Education AcRF Tier 1 (RT7/23) and the National Medical Research Council (NMRC) (MOH-000927). 2024-05-06T02:25:48Z 2024-05-06T02:25:48Z 2024 Journal Article Chen, W., Zhu, S., Duan, R., Wang, C., Wang, F., Wu, Y., Dai, M., Cui, J., Chae, S. H., Li, Z., Ma, X., Wang, Q., Liu, Z. & Wang, Q. J. (2024). Extraordinary enhancement of nonlinear optical interaction in NbOBr2 microcavities. Advanced Materials, 36(26), 2400858-. https://dx.doi.org/10.1002/adma.202400858 0935-9648 https://hdl.handle.net/10356/175582 10.1002/adma.202400858 38631028 26 36 2400858 en MOH-000927 MOE-T2EP50120-0009 RT7/23 NRF-CRP22-2019-0007 NRF-CRP23-2019-0007 NRF-CRP26-2021-0004 A2090b0144 R22I0IR122 M22K2c0080 Advanced Materials © 2024 Wiley-VCH GmbH. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1002/adma.202400858. application/pdf |
| spellingShingle | Physics Photonics Fabry-Pérot microcavit Chen, Wenduo Zhu, Song Duan, Ruihuan Wang, Chongwu Wang, Fakun Wu, Yao Dai, Mingjin Cui, Jieyuan Chae, Sang Hoon Li, Zhipeng Ma, Xuezhi Wang, Qian Liu, Zheng Wang, Qi Jie Extraordinary enhancement of nonlinear optical interaction in NbOBr2 microcavities |
| title | Extraordinary enhancement of nonlinear optical interaction in NbOBr2 microcavities |
| title_full | Extraordinary enhancement of nonlinear optical interaction in NbOBr2 microcavities |
| title_fullStr | Extraordinary enhancement of nonlinear optical interaction in NbOBr2 microcavities |
| title_full_unstemmed | Extraordinary enhancement of nonlinear optical interaction in NbOBr2 microcavities |
| title_short | Extraordinary enhancement of nonlinear optical interaction in NbOBr2 microcavities |
| title_sort | extraordinary enhancement of nonlinear optical interaction in nbobr2 microcavities |
| topic | Physics Photonics Fabry-Pérot microcavit |
| url | https://hdl.handle.net/10356/175582 |
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