Research

A novel spectrometer has been developed based on dual-comb spectroscopy, enabling high resolution hyperspectral measurements at μs-level time resolution. This new approach with HR-TR-DCS exhibits great potential in quantitative measurement of transient intermediates and opens opportunities to decipher key reaction mechanisms in atmospheric chemistry.

Communications Chemistry, 3, 95 (2020).  [Link]

Analytical Chemistry, 94, 5752 (2022). [Link]

Opt. Lett., 45, 6791 (2020).  [Link]

Multiple reaction species, including precursors, free radicals, intermediates, and end products can be simultaneously probed using HR-TR-DCS. Our unique approach enables investigations not only on reaction kinetics, but also for complex reaction mechanisms and bring new insights in the fields of molecular physics and atmospheric chemistry.

J. Chem. Phys., 159, 184203 (2023). [Link]

Communications Chemistry, 6, 130 (2023). [Link]

Phys. Chem. Chem. Phys., 25, 4062 (2023). [Link]

Based on the capabilities of wavelength agility and easily adjustable comb-mode spacing of our dual-comb spectrometer, broadband spectral measurements of nitrous oxide and its isotopes can be measured with Doppler-limited resolution. The determination of isotopic abundances with <1% uncertainty can be implemented. Both precision spectral metrology and fast molecular sampling are able to be implemented by using our highly flexible dual-comb spectrometers.

Phys. Chem. Chem. Phys., 21, 18400 (2019).  [Link]

J. Chem. Phys., 159, 184203 (2023). [Link]

We are also interested in developing compact and portable system for gas sensing and environmental monitoring such as Herriott-type multi-pass cells and photoacoustic sensors.