Cited time in webofscience Cited time in scopus

Time-gated pre-resonant femtosecond stimulated Raman spectroscopy of diethylthiatricarbocyanine iodide

Title
Time-gated pre-resonant femtosecond stimulated Raman spectroscopy of diethylthiatricarbocyanine iodide
Author(s)
Kim, Hyung MinKim, HyunminYang, IlseungJin, Seung MinSuh, Yung Doug
Issued Date
2014-03
Citation
Physical Chemistry Chemical Physics, v.16, no.11, pp.5312 - 5318
Type
Article
Keywords
CROSS-PHASE MODULATIONSCATTERINGEXCITATIONCOHERENTLASERMICROSCOPYDYESSTATE
ISSN
1463-9076
Abstract
We present time-gated femtosecond stimulated Raman spectroscopy (fSRS) under the pre-resonance Raman conditions of diethylthiatricarbocyanine (DTTC) iodide. A 'pseudo emission-free' condition is achieved by delivering the probe beam ahead of the pump beam. Regeneratively amplified pulse trains are employed to create an angle-geometry (non-collimated) mixing between the pump and probe beams, leading to highly sensitive measurement of the stimulated Raman gain. Time-integrated spectroscopy allows for a more quantitative distinction between the contributions of stimulated Raman scattering and stimulated emission. We successfully obtain a highly sensitive (signal-to-noise ratio >100) stimulated Raman spectrum under the optimized conditions, which compares favourably to results obtained using two-dimensional correlation spectroscopy (2DCOS). Given the optical pre-resonance of ∼0.1 eV, the background signals mostly originate from the stimulated emission of excited electrons and are significantly reduced by partial overlapping of the pump and probe beams; a genuine fSRS spectral profile is obtained for a temporal delay of ∼0.2 ps between the two beams. © 2014 the Owner Societies.
URI
http://hdl.handle.net/20.500.11750/2411
DOI
10.1039/c3cp54870h
Publisher
Royal Society of Chemistry
Related Researcher
  • 김현민 Kim, Hyunmin
  • Research Interests Nonlinear optics; Femtosecond ultrafast carrier dynamics; Super resolution microscopy; Optical soliton transport; Biological imaging
Files in This Item:

There are no files associated with this item.

Appears in Collections:
Division of Biomedical Technology 1. Journal Articles

qrcode

  • twitter
  • facebook
  • mendeley

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE