Mode-programmable comb spectroscopy enabling non-cooperative computational sensing with single-photon sensitivity
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arXiv
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866918211711139840 |
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| author | Zhu, Dongxu Wan, Zhuoren Ma, Xiaoshuai Yan, Ming Chen, Yuan Yang, Mei Wang, Zijian Zhang, Xiuxiu Li, Min Li, Hua Huang, Kun Liang, Yan Zeng, Heping |
| author_facet | Zhu, Dongxu Wan, Zhuoren Ma, Xiaoshuai Yan, Ming Chen, Yuan Yang, Mei Wang, Zijian Zhang, Xiuxiu Li, Min Li, Hua Huang, Kun Liang, Yan Zeng, Heping |
| contents | Frequency comb spectroscopy provides broadband access to molecular fingerprints with mode-defined spectral resolution. However, its deployment in non-cooperative gas sensing remains challenging because conventional implementations require cooperative reflectors or well-controlled optical returns. Here, we overcome this limitation by introducing a computational sensing scheme based on a mode-programmable optical comb and a high-sensitivity single-pixel detector. In our approach, a two-dimensional disperser and a high-speed digital micromirror device encode individual comb modes, enabling broadband, mode-resolved spectral acquisition without relying on coherent detection. This architecture supports measurements through highly scattering media and from non-cooperative targets while retaining the core advantages of frequency-comb spectroscopy. Our method achieves picometer-level spectral resolution, a 10-nm (1.27-THz) instantaneous bandwidth, single-photon sensitivity down to 10^-4 photons per pulse, and compressed spectral acquisition with 2.5% sampling for <10% reconstruction error. These capabilities establish a powerful platform for diverse gas-sensing applications, including remote environmental monitoring, industrial leak localization, and explosive-threat detection. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_16365 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Mode-programmable comb spectroscopy enabling non-cooperative computational sensing with single-photon sensitivity Zhu, Dongxu Wan, Zhuoren Ma, Xiaoshuai Yan, Ming Chen, Yuan Yang, Mei Wang, Zijian Zhang, Xiuxiu Li, Min Li, Hua Huang, Kun Liang, Yan Zeng, Heping Optics Applied Physics Frequency comb spectroscopy provides broadband access to molecular fingerprints with mode-defined spectral resolution. However, its deployment in non-cooperative gas sensing remains challenging because conventional implementations require cooperative reflectors or well-controlled optical returns. Here, we overcome this limitation by introducing a computational sensing scheme based on a mode-programmable optical comb and a high-sensitivity single-pixel detector. In our approach, a two-dimensional disperser and a high-speed digital micromirror device encode individual comb modes, enabling broadband, mode-resolved spectral acquisition without relying on coherent detection. This architecture supports measurements through highly scattering media and from non-cooperative targets while retaining the core advantages of frequency-comb spectroscopy. Our method achieves picometer-level spectral resolution, a 10-nm (1.27-THz) instantaneous bandwidth, single-photon sensitivity down to 10^-4 photons per pulse, and compressed spectral acquisition with 2.5% sampling for <10% reconstruction error. These capabilities establish a powerful platform for diverse gas-sensing applications, including remote environmental monitoring, industrial leak localization, and explosive-threat detection. |
| title | Mode-programmable comb spectroscopy enabling non-cooperative computational sensing with single-photon sensitivity |
| topic | Optics Applied Physics |
| url | https://arxiv.org/abs/2511.16365 |