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Femtosecond Time-Resolved Infrared-Resonant Third-Order Sum-Frequency Spectroscopy

Year: 2021
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide We demonstrate a coherent vibrational spectroscopy based on molecular infrared (IR)-active resonance. We apply two femtosecond pulses (one in near-IR and the other in mid-IR) to generate the femtosecond time-resolved IR-resonant third-order sum-frequency signal. The mid-IR pulse is tuned to be resonant with molecular vibrations. This experimental configuration converts the IR light into a visible signal and exhibits high sensitivity to the vibrational mode of the molecule. The technique can be applied to acquire chemical information on various biological samples, including living tissues in their natural water-rich state. This approach can also be used to study the dynamics of IR-active vibrational modes, that is, measure the decoherence time.
DOI: 10.1021/acsphotonics.0c01940
Authors: Jizhou Wang, Kai Wang, Yujie Shen, Zehua Han, Fu Li, Zhe He, Da-wei Wang, Alexei V. Sokolov, Marlan O. Scully
Institutions: State Key Laboratory of Modern Optical Instruments, Zhejiang University, Texas A&M University, Sun Yat-sen University, California Institute of Technology, Zhejiang Lab, Baylor University
Language: English
Open Access status: hybrid
Estimated APC paid: $5,000
Funders: Welch Foundation, National Natural Science Foundation of China, Major Scientific Project of Zhejiang Laboratory, Fundamental Research Funds for the Central Universities, Division of Physics, Air Force Office of Scientific Research, Office of Naval Research Global
Awards: G1092766832, G1330996399, G2312592510, G2478971541, G361644143, G4608631916, G7095098517, G7315955457, G8936569667
OpenAlex ID: W3131302156
FWCI: 1.084
Cites: 44
Cited by: 14
Related to: 10