We present a visible-infrared sum-frequency spectroscopic technique that is capable of simultaneously determining the magnitude and phase of the sample response from a single set of experimental conditions. This is especially valuable in cases where the phase stability is high, as in collinear beam geometries, as it enables multiple experiments to be performed without re-measuring the local oscillator phase or the reference phase. After illustrating the phase stability achievable with such a geometry, we provide a technique for quantitatively determining the magnitude and phase from a single set of two-dimensional spectral-temporal interference fringes. A complete demonstration is provided for the C–H stretching frequency region at the surface of an octadecyltricholosilane film.
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7 July 2012
Research Article|
July 03 2012
Simultaneous measurement of magnitude and phase in interferometric sum-frequency vibrational spectroscopy
Paul A. Covert;
Paul A. Covert
Department of Chemistry,
University of Victoria
, Victoria, British Columbia V8W 3V6, Canada
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William R. FitzGerald;
William R. FitzGerald
Department of Chemistry,
University of Victoria
, Victoria, British Columbia V8W 3V6, Canada
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Dennis K. Hore
Dennis K. Hore
a)
Department of Chemistry,
University of Victoria
, Victoria, British Columbia V8W 3V6, Canada
Search for other works by this author on:
Paul A. Covert
William R. FitzGerald
Dennis K. Hore
a)
Department of Chemistry,
University of Victoria
, Victoria, British Columbia V8W 3V6, Canada
a)
Electronic mail: [email protected].
J. Chem. Phys. 137, 014201 (2012)
Article history
Received:
February 29 2012
Accepted:
June 11 2012
Citation
Paul A. Covert, William R. FitzGerald, Dennis K. Hore; Simultaneous measurement of magnitude and phase in interferometric sum-frequency vibrational spectroscopy. J. Chem. Phys. 7 July 2012; 137 (1): 014201. https://doi.org/10.1063/1.4731282
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