Terahertz-field-induced second-harmonic generation measurements of liquid dynamics

D. J. Cook; J. X. Chen; E. A. Morlino; R. M. Hochstrasser

doi:10.1016/S0009-2614(99)00668-5

Terahertz-field-induced second-harmonic generation measurements of liquid dynamics

D. J. Cook
, J. X. Chen
, E. A. Morlino
, R. M. Hochstrasser

Research output: Contribution to journal › Article › peer-review

120 Scopus citations

Abstract

A new third-order non-linear THz pump-optical probe measurement of liquid dynamics is reported. Terahertz-field-induced second-harmonic generation (TFISH) measures the correlations between the hyperpolarizability and dipole moment fluctuations at equilibrium. This method is analyzed in the Born-Oppenheimer approximation, and is shown to measure diffusive orientational dynamics as 〈P₁(cos θ)〉. Measurements of water and acetonitrile yield relaxation time constants of 13 and 9.6 ps, respectively. Signals were also obtained from thin polymer films and surfaces, suggesting a number of applications for this method.

Original language	English (US)
Pages (from-to)	221-228
Number of pages	8
Journal	Chemical Physics Letters
Volume	309
Issue number	3-4
DOIs	https://doi.org/10.1016/S0009-2614(99)00668-5
State	Published - Aug 13 1999
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/S0009-2614(99)00668-5

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title = "Terahertz-field-induced second-harmonic generation measurements of liquid dynamics",

abstract = "A new third-order non-linear THz pump-optical probe measurement of liquid dynamics is reported. Terahertz-field-induced second-harmonic generation (TFISH) measures the correlations between the hyperpolarizability and dipole moment fluctuations at equilibrium. This method is analyzed in the Born-Oppenheimer approximation, and is shown to measure diffusive orientational dynamics as 〈P1(cos θ)〉. Measurements of water and acetonitrile yield relaxation time constants of 13 and 9.6 ps, respectively. Signals were also obtained from thin polymer films and surfaces, suggesting a number of applications for this method.",

author = "Cook, \{D. J.\} and Chen, \{J. X.\} and Morlino, \{E. A.\} and Hochstrasser, \{R. M.\}",

year = "1999",

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doi = "10.1016/S0009-2614(99)00668-5",

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AU - Cook, D. J.

AU - Chen, J. X.

AU - Morlino, E. A.

AU - Hochstrasser, R. M.

PY - 1999/8/13

Y1 - 1999/8/13

N2 - A new third-order non-linear THz pump-optical probe measurement of liquid dynamics is reported. Terahertz-field-induced second-harmonic generation (TFISH) measures the correlations between the hyperpolarizability and dipole moment fluctuations at equilibrium. This method is analyzed in the Born-Oppenheimer approximation, and is shown to measure diffusive orientational dynamics as 〈P1(cos θ)〉. Measurements of water and acetonitrile yield relaxation time constants of 13 and 9.6 ps, respectively. Signals were also obtained from thin polymer films and surfaces, suggesting a number of applications for this method.

AB - A new third-order non-linear THz pump-optical probe measurement of liquid dynamics is reported. Terahertz-field-induced second-harmonic generation (TFISH) measures the correlations between the hyperpolarizability and dipole moment fluctuations at equilibrium. This method is analyzed in the Born-Oppenheimer approximation, and is shown to measure diffusive orientational dynamics as 〈P1(cos θ)〉. Measurements of water and acetonitrile yield relaxation time constants of 13 and 9.6 ps, respectively. Signals were also obtained from thin polymer films and surfaces, suggesting a number of applications for this method.

UR - https://www.scopus.com/pages/publications/0001062818

UR - https://www.scopus.com/pages/publications/0001062818#tab=citedBy

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SN - 0009-2614

VL - 309

SP - 221

EP - 228

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 3-4

ER -

Terahertz-field-induced second-harmonic generation measurements of liquid dynamics

Abstract

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