Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session N00: Poster Session II (11am-2pm PST)
11:00 AM,
Wednesday, March 8, 2023
Room: Exhibit Hall (Forum Ballroom)
Sponsoring
Unit:
APS
Abstract: N00.00379 : Ultrafast spectroscopy of an azide in the vibrational strong coupling regime*
Presenter:
Garrek Stemo
(Nara Inst of Sci & Tech)
Authors:
Garrek Stemo
(Nara Inst of Sci & Tech)
Hiroyuki Katsuki
(Nara Inst of Sci & Tech)
Hisao Yanagi
(Nara Inst of Sci & Tech)
We apply femtosecond mid-infrared pump-probe spectroscopy to a typical organic compound, diphenylphosphoryl azide (DPPA), known to have a rather large Rabi splitting. The N3 asymmetric stretch mode around 4.6 μm is coupled to a cavity mode, with the cavity made of two planar gold mirrors. We compare the in-cavity pump-probe spectrum to the out-of-cavity transient spectrum to investigate the early time dynamics of the upper and lower polariton states. Also, we will discuss the influence of the metallic surface, where localized surface plasmons and phonons may affect the response of the vibrational polaritons.
Understanding the ultrafast dynamics of a variety of chemical species is crucial for future research on how a chemical bond responds under VSC. This research opens the way to studying modified click chemistry under VSC.
*JSPS KAKENHI Grant Numbers JP20K21175, JP21H01890, by the Murata Science FoundationGrant-in-Aid from the Nara Institute of Science and Technology
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