Power-induced broadening of transient resonance Raman spectra of deoxyhemoglobin

R. G. Alden, M. R. Ondrias, S. Courtney, E. W. Findsen, Joel M. Friedman

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The power-dependent behavior of the resonance Raman spectra of deoxyhemoglobin has been studied by using ∼30-ps laser pulses. The line width of a Raman-active mode sensitive to porphyrin π-electron density, v4, broadens asymmetrically as a function of laser fluence. Several possible origins of this phenomenon are examined including the presence of a transient photoproduct, unrelaxed internal vibrational population, and a nonlinear change in the resonance Raman scattering process. Our data are qualitatively consistent with the last of these possibilities. The implications of these results for future transient Raman studies are discussed.

Original languageEnglish (US)
Pages (from-to)85-90
Number of pages6
JournalJournal of Physical Chemistry
Volume94
Issue number1
StatePublished - 1990
Externally publishedYes

Fingerprint

Raman scattering
Raman spectra
Porphyrins
resonance scattering
porphyrins
Linewidth
lasers
Carrier concentration
Laser pulses
fluence
Lasers
pulses
deoxyhemoglobin

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Power-induced broadening of transient resonance Raman spectra of deoxyhemoglobin. / Alden, R. G.; Ondrias, M. R.; Courtney, S.; Findsen, E. W.; Friedman, Joel M.

In: Journal of Physical Chemistry, Vol. 94, No. 1, 1990, p. 85-90.

Research output: Contribution to journalArticle

Alden, RG, Ondrias, MR, Courtney, S, Findsen, EW & Friedman, JM 1990, 'Power-induced broadening of transient resonance Raman spectra of deoxyhemoglobin', Journal of Physical Chemistry, vol. 94, no. 1, pp. 85-90.
Alden, R. G. ; Ondrias, M. R. ; Courtney, S. ; Findsen, E. W. ; Friedman, Joel M. / Power-induced broadening of transient resonance Raman spectra of deoxyhemoglobin. In: Journal of Physical Chemistry. 1990 ; Vol. 94, No. 1. pp. 85-90.
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