Interferometric Measurement of Transient Absorption and Refraction Spectra with Dual Frequency Comb

Research output: Contribution to journalArticle

3 Citations (Scopus)

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 (DFC-IPS) 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.

Original languageEnglish
Pages (from-to)9775-9785
Number of pages11
JournalJournal of Physical Chemistry B
Volume122
Issue number42
DOIs
Publication statusPublished - 2018 Oct 25

Fingerprint

Comb and Wattles
Refraction
refraction
Pumps
pumps
absorption spectra
probes
Spectrum Analysis
Spectroscopy
dynamic range
spectroscopy
chemical reactions
coverings
oscillators
Scanning
Molecules
scanning

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Interferometric Measurement of Transient Absorption and Refraction Spectra with Dual Frequency Comb. / Kim, Junwoo; Yoon, Tai Hyun; Cho, Minhaeng.

In: Journal of Physical Chemistry B, Vol. 122, No. 42, 25.10.2018, p. 9775-9785.

Research output: Contribution to journalArticle

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