Off-resonant transient birefringence in liquids

Minhaeng Cho, Mei Du, Norbert F. Scherer, Graham R. Fleming, Shaul Mukamel

Research output: Contribution to journalArticle

237 Citations (Scopus)

Abstract

Off-resonant transient birefringence measurements are analyzed using a reduced equation of motion for the ground state density matrix, which is expanded using an effective Hamiltonian. Assuming that the pump field is weak, we express the polarization relevant for the birefringence signal in terms of a convolution of the tensorial polarizability response function with the external fields. The homodyne-detected birefringence signal is directly compared with the coherent Raman signal. The relationship between off-resonant birefringence and spontaneous Raman experiments is discussed. By expanding the polarizability in powers of the nuclear coordinates and applying the Brownian oscillator model to the coordinate response function, we separate the birefringence signal into intra- and intermolecular coordinate response functions. Off-resonant transient birefringences of acetonitrile, chloroform, dimethylsulfoxide, and a series of alcohols were measured. The data are transformed to the frequency domain by using a model independent analysis method. The spectra are discussed in the context of various models for the distribution of intermolecular modes (spectral density) in liquids.

Original languageEnglish
Pages (from-to)2410-2428
Number of pages19
JournalThe Journal of Chemical Physics
Volume99
Issue number4
Publication statusPublished - 1993 Dec 1
Externally publishedYes

Fingerprint

Birefringence
birefringence
Liquids
liquids
Hamiltonians
Spectral density
Chloroform
Dimethyl Sulfoxide
chloroform
Convolution
convolution integrals
Ground state
Equations of motion
acetonitrile
equations of motion
alcohols
Alcohols
oscillators
Pumps
Polarization

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Cho, M., Du, M., Scherer, N. F., Fleming, G. R., & Mukamel, S. (1993). Off-resonant transient birefringence in liquids. The Journal of Chemical Physics, 99(4), 2410-2428.

Off-resonant transient birefringence in liquids. / Cho, Minhaeng; Du, Mei; Scherer, Norbert F.; Fleming, Graham R.; Mukamel, Shaul.

In: The Journal of Chemical Physics, Vol. 99, No. 4, 01.12.1993, p. 2410-2428.

Research output: Contribution to journalArticle

Cho, M, Du, M, Scherer, NF, Fleming, GR & Mukamel, S 1993, 'Off-resonant transient birefringence in liquids', The Journal of Chemical Physics, vol. 99, no. 4, pp. 2410-2428.
Cho M, Du M, Scherer NF, Fleming GR, Mukamel S. Off-resonant transient birefringence in liquids. The Journal of Chemical Physics. 1993 Dec 1;99(4):2410-2428.
Cho, Minhaeng ; Du, Mei ; Scherer, Norbert F. ; Fleming, Graham R. ; Mukamel, Shaul. / Off-resonant transient birefringence in liquids. In: The Journal of Chemical Physics. 1993 ; Vol. 99, No. 4. pp. 2410-2428.
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