Model-independent maximum-entropy method for the analysis of sum-frequency vibrational spectroscopy

Pao Keng Yang; Jung Y. Huang

doi:10.1364/JOSAB.17.001216

Model-independent maximum-entropy method for the analysis of sum-frequency vibrational spectroscopy

Pao Keng Yang, Jung Y. Huang^*

^*Corresponding author for this work

Department of Photonics

Research output: Contribution to journal › Article

14 Scopus citations

Abstract

We have developed and applied a maximum-entropy phase-retrieval procedure to analyze sum-frequency vibrational spectra from a CCl₄/octadecyl tricholosilane/silica interface and a hydrogen-terminated diamond C(lll) surface. Some a priori knowledge of a nonlinear optical spectrum was employed for determining the phase of nonlinear optical susceptibility, and therefore the requirement for experimental phase measurement can be avoided. The results agree well with those from the Lorentzian line-shape model and justify the applicability of the a priori constraints employed in our phase-retrieval procedure.

Original language	English
Pages (from-to)	1216-1222
Number of pages	7
Journal	Journal of the Optical Society of America B: Optical Physics
Volume	17
Issue number	7
DOIs	https://doi.org/10.1364/JOSAB.17.001216
State	Published - 1 Jan 2000

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Yang, P. K., & Huang, J. Y. (2000). Model-independent maximum-entropy method for the analysis of sum-frequency vibrational spectroscopy. Journal of the Optical Society of America B: Optical Physics, 17(7), 1216-1222. https://doi.org/10.1364/JOSAB.17.001216

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AB - We have developed and applied a maximum-entropy phase-retrieval procedure to analyze sum-frequency vibrational spectra from a CCl4/octadecyl tricholosilane/silica interface and a hydrogen-terminated diamond C(lll) surface. Some a priori knowledge of a nonlinear optical spectrum was employed for determining the phase of nonlinear optical susceptibility, and therefore the requirement for experimental phase measurement can be avoided. The results agree well with those from the Lorentzian line-shape model and justify the applicability of the a priori constraints employed in our phase-retrieval procedure.

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