Compact mid-infrared dual-comb spectrometer over 3–4 μm via intra-pulse difference frequency generation in LiNbO3 waveguides
The mid-infrared optical frequency comb is a powerful tool for gas sensing. In this study, we demonstrate a simple mid-infrared dual-comb spectrometer covering 3–4 μm in LiNbO3 waveguides. Based on a low-power fiber laser system, the mid-infrared comb is achieved via intra-pulse difference frequency...
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| Format: | Article |
| Language: | English |
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Cambridge University Press
2024-01-01
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| Series: | High Power Laser Science and Engineering |
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| Online Access: | https://www.cambridge.org/core/product/identifier/S2095471924000021/type/journal_article |
| _version_ | 1827255565303152640 |
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| author | Lian Zhou Haipeng Lou Zejiang Deng Xiong Qin Jiayi Pan Yuanfeng Di Chenglin Gu Daping Luo Wenxue Li |
| author_facet | Lian Zhou Haipeng Lou Zejiang Deng Xiong Qin Jiayi Pan Yuanfeng Di Chenglin Gu Daping Luo Wenxue Li |
| author_sort | Lian Zhou |
| collection | DOAJ |
| description | The mid-infrared optical frequency comb is a powerful tool for gas sensing. In this study, we demonstrate a simple mid-infrared dual-comb spectrometer covering 3–4 μm in LiNbO3 waveguides. Based on a low-power fiber laser system, the mid-infrared comb is achieved via intra-pulse difference frequency generation in the LiNbO3 waveguide. We construct pre-chirp management before supercontinuum generation to control spatiotemporal alignment for pump and signal pulses. The supercontinuum is directly coupled into a chirped periodically poled LiNbO3 waveguide for the 3–4 μm idler generation. A mid-infrared dual-comb spectrometer based on this approach provides a 100 MHz resolution over 25 THz coverage. To evaluate the applicability for spectroscopy, we measure the methane spectrum using the dual-comb spectrometer. The measured results are consistent with the HITRAN database, in which the root mean square of the residual is 3.2%. This proposed method is expected to develop integrated and robust mid-infrared dual-comb spectrometers on chip for sensing. |
| first_indexed | 2024-03-08T04:51:48Z |
| format | Article |
| id | doaj.art-92e76b8008054bf7b19660e351f37fbd |
| institution | Directory Open Access Journal |
| issn | 2095-4719 2052-3289 |
| language | English |
| last_indexed | 2025-03-22T01:25:02Z |
| publishDate | 2024-01-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | High Power Laser Science and Engineering |
| spelling | doaj.art-92e76b8008054bf7b19660e351f37fbd2024-05-10T06:00:48ZengCambridge University PressHigh Power Laser Science and Engineering2095-47192052-32892024-01-011210.1017/hpl.2024.2Compact mid-infrared dual-comb spectrometer over 3–4 μm via intra-pulse difference frequency generation in LiNbO3 waveguidesLian Zhou0Haipeng Lou1Zejiang Deng2Xiong Qin3Jiayi Pan4Yuanfeng Di5Chenglin Gu6Daping Luo7Wenxue Li8https://orcid.org/0000-0003-2018-8779State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, ChinaState Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, ChinaState Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, ChinaState Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, ChinaState Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, ChinaState Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, ChinaState Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, ChinaState Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, ChinaState Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China Joint Research Center of Light Manipulation Science and Photonic Integrated Chip of East China Normal University and Shandong Normal University, East China Normal University, Shanghai, ChinaThe mid-infrared optical frequency comb is a powerful tool for gas sensing. In this study, we demonstrate a simple mid-infrared dual-comb spectrometer covering 3–4 μm in LiNbO3 waveguides. Based on a low-power fiber laser system, the mid-infrared comb is achieved via intra-pulse difference frequency generation in the LiNbO3 waveguide. We construct pre-chirp management before supercontinuum generation to control spatiotemporal alignment for pump and signal pulses. The supercontinuum is directly coupled into a chirped periodically poled LiNbO3 waveguide for the 3–4 μm idler generation. A mid-infrared dual-comb spectrometer based on this approach provides a 100 MHz resolution over 25 THz coverage. To evaluate the applicability for spectroscopy, we measure the methane spectrum using the dual-comb spectrometer. The measured results are consistent with the HITRAN database, in which the root mean square of the residual is 3.2%. This proposed method is expected to develop integrated and robust mid-infrared dual-comb spectrometers on chip for sensing.https://www.cambridge.org/core/product/identifier/S2095471924000021/type/journal_articledifference frequency generationdual-comb spectroscopymid-infrared gas sensingnonlinear optics |
| spellingShingle | Lian Zhou Haipeng Lou Zejiang Deng Xiong Qin Jiayi Pan Yuanfeng Di Chenglin Gu Daping Luo Wenxue Li Compact mid-infrared dual-comb spectrometer over 3–4 μm via intra-pulse difference frequency generation in LiNbO3 waveguides High Power Laser Science and Engineering difference frequency generation dual-comb spectroscopy mid-infrared gas sensing nonlinear optics |
| title | Compact mid-infrared dual-comb spectrometer over 3–4 μm via intra-pulse difference frequency generation in LiNbO3 waveguides |
| title_full | Compact mid-infrared dual-comb spectrometer over 3–4 μm via intra-pulse difference frequency generation in LiNbO3 waveguides |
| title_fullStr | Compact mid-infrared dual-comb spectrometer over 3–4 μm via intra-pulse difference frequency generation in LiNbO3 waveguides |
| title_full_unstemmed | Compact mid-infrared dual-comb spectrometer over 3–4 μm via intra-pulse difference frequency generation in LiNbO3 waveguides |
| title_short | Compact mid-infrared dual-comb spectrometer over 3–4 μm via intra-pulse difference frequency generation in LiNbO3 waveguides |
| title_sort | compact mid infrared dual comb spectrometer over 3 4 μm via intra pulse difference frequency generation in linbo3 waveguides |
| topic | difference frequency generation dual-comb spectroscopy mid-infrared gas sensing nonlinear optics |
| url | https://www.cambridge.org/core/product/identifier/S2095471924000021/type/journal_article |
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