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Title: Broadband cavity-enhanced ultrafast spectroscopy
Broadband ultrafast optical spectroscopy methods, such as transient absorption spectroscopy and 2D spectroscopy, are widely used to study molecular dynamics. However, these techniques are typically restricted to optically thick samples, such as solids and liquid solutions. In this article we discuss a cavity-enhanced ultrafast transient absorption spectrometer covering almost the entire visible range with a detection limit of ΔOD < 1 × 10 −9 , extending broadband all-optical ultrafast spectroscopy techniques to dilute beams of gas-phase molecules and clusters. We describe the technical innovations behind the spectrometer and present transient absorption data on two archetypical molecular systems for excited-state intramolecular proton transfer, 1′-hydroxy-2′-acetonapthone and salicylideneaniline, under jet-cooled and Ar cluster conditions.  more » « less
Award ID(s):
1708743
PAR ID:
10282694
Author(s) / Creator(s):
; ; ;
Date Published:
Journal Name:
Physical Chemistry Chemical Physics
Volume:
23
Issue:
16
ISSN:
1463-9076
Page Range / eLocation ID:
9743 to 9752
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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