| [1] | Needham, L. M. et al. Label-free detection and profiling of individual solution-phase molecules. Nature 629, 1062-1068 (2024). doi: 10.1038/s41586-024-07370-8 |
| [2] | Wen, L. et al. On-chip ultrasensitive and rapid hydrogen sensing based on plasmon-induced hot electron–molecule interaction. Light: Science & Applications 12, 76 (2023). |
| [3] | Zeng, K. B. et al. Synthesized complex-frequency excitation for ultrasensitive molecular sensing. eLight 4, 1 (2024). doi: 10.1186/s43593-023-00058-y |
| [4] | Pan, G. Z. et al. Harnessing the capabilities of VCSELs: unlocking the potential for advanced integrated photonic devices and systems. Light: Science & Applications 13, 229 (2024). |
| [5] | Zheng, C. T. et al. Recent progress in infrared absorption spectroscopy for gas sensing with discrete optics, hollow-core fibers and on-chip waveguides. Journal of Lightwave Technology 41, 4079-4096 (2023). doi: 10.1109/JLT.2023.3262774 |
| [6] | Zheng, K. Y. et al. Hollow-core fiber-based mid-infrared photothermal spectroscopy for multi-component gas sensing. IEEE Journal of Selected Topics in Quantum Electronics 30, 5600606 (2024). |
| [7] | Peng, Z. H. et al. On-chip near-infrared gas sensing based on slow light mode multiplexing in photonic crystal waveguides. Lab on a Chip 25, 5318-5328 (2025). doi: 10.1039/D5LC00403A |
| [8] | Yu, D. et al. Simultaneous CH4/CO measurement at atmospheric pressure using a single 2.3 μm laser and a dual-gas cross-interference cancellation algorithm. IEEE Transactions on Instrumentation and Measurement 71, 9503009 (2022). |
| [9] | Xi, Z. et al. Near-infrared dual-gas sensor system for methane and ethane detection using a compact multipass cell. Frontiers in Physics 10, 843171 (2022). doi: 10.3389/fphy.2022.843171 |
| [10] | Zheng, K. Y. et al. Light-induced off-axis cavity-enhanced thermoelastic spectroscopy in the near-infrared for trace gas sensing. Optics Express 29, 23213-23224 (2021). doi: 10.1364/OE.430745 |
| [11] | Pi, M. Q. et al. Ultra-wideband mid-infrared chalcogenide suspended nanorib waveguide gas sensors with exceptionally high external confinement factor beyond free-space. ACS Nano 17, 17761-17770 (2023). doi: 10.1021/acsnano.3c02699 |
| [12] | Peng, Z. H. et al. Slow-light-enhanced on-chip 1D and 2D photonic crystal waveguide gas sensing in near-IR with an ultrahigh interaction factor. Photonics Research 11, 1647-1656 (2023). doi: 10.1364/PRJ.494762 |
| [13] | Vlk, M. et al. Extraordinary evanescent field confinement waveguide sensor for mid-infrared trace gas spectroscopy. Light: Science & Applications 10, 26 (2021). |
| [14] | Zheng, K. Y. et al. Mid-infrared all-optical modulators based on an acetylene-filled hollow-core fiber. Light: Advanced Manufacturing 3, 50 (2022). doi: 10.37188/lam.2022.050 |
| [15] | Zhao, P. C. et al. Mode-phase-difference photothermal spectroscopy for gas detection with an anti-resonant hollow-core optical fiber. Nature Communications 11, 847 (2020). doi: 10.1038/s41467-020-14707-0 |
| [16] | Jin, W. et al. Ultra-sensitive all-fibre photothermal spectroscopy with large dynamic range. Nature Communications 6, 6767 (2015). doi: 10.1038/ncomms7767 |
| [17] | Krzempek, K. A review of photothermal detection techniques for gas sensing applications. Applied Sciences 9, 2826 (2019). doi: 10.3390/app9142826 |
| [18] | Zheng, K. Y. et al. Dual slow-light enhanced photothermal gas spectroscopy on a silicon chip. Nature Communications 16, 10549 (2025). doi: 10.1038/s41467-025-65583-5 |
| [19] | Zheng, K. Y. et al. Waveguide-based on-chip photothermal spectroscopy for gas sensing. Laser & Photonics Reviews 18, 2301071 (2024). |
| [20] | Yan, Y. et al. Nanoliter‐scale light–matter interaction in a fiber‐tip cavity enables sensitive photothermal gas detection. Laser & Photonics Reviews 18, 2400907 (2024). doi: 10.1002/lpor.202400907 |
| [21] | Zheng, K. Y. et al. Suspended waveguide-enhanced near-infrared photothermal spectroscopy for ppb-level molecular gas sensing on a chalcogenide chip. Light: Science & Applications 15, 116 (2026). doi: 10.1038/s41377-026-02196-7 |