Interferometric Measurement of Transient Absorption and Refraction Spectra with Dual Frequency Comb
- Authors
- Kim, JunWoo; Yoon, Tai Hyun; Cho, Minhaeng
- Issue Date
- 25-10월-2018
- Publisher
- AMER CHEMICAL SOC
- Citation
- JOURNAL OF PHYSICAL CHEMISTRY B, v.122, no.42, pp.9775 - 9785
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF PHYSICAL CHEMISTRY B
- Volume
- 122
- Number
- 42
- Start Page
- 9775
- End Page
- 9785
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/72440
- DOI
- 10.1021/acs.jpcb.8b09262
- ISSN
- 1520-6106
- Abstract
- We demonstrate that a dual frequency comb-transient absorption (DFC-TA) technique can be combined with a time-domain interferometric detection to measure both the transient absorption and refraction spectra of molecules in solution. To do this, the pump-probe signal field of DFC-TA is allowed to interfere with a time-delayed local oscillator field in a time domain. We show that this DFC interferometric pump-probe spectroscopy (DFCIPS) technique has a unique ability to extract the phase and amplitude information on the pump-probe signal using just a single-scan data, while conventional techniques require an independent signal measured without the pump field for the normalization of the pump- probe spectrum. As a proof-of-principle experiment, we here show that the DFC-IPS enables us to simultaneously measure the frequency-resolved (from 650 to 950 nm) transient absorption and refraction signals with an exceptionally broad dynamic range from femtosecond to nanosecond without using a mechanical translational stage for pump-probe time-scanning. We anticipate that our DFC-IPS technique with femtosecond time-resolution capability will be useful to investigate photoinduced chemical and biological reactions covering broad dynamic ranges.
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Collections - College of Science > Department of Physics > 1. Journal Articles
- College of Science > Department of Chemistry > 1. Journal Articles
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