Differential heterodyne detection with diffractive optics for multidimensional transient-grating spectroscopy

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Author(s)
Khurmi, Champak
Berg, Mark
Griffith University Author(s)
Year published
2009
Metadata
Show full item recordAbstract
Heterodyne detection with a local oscillator generated by a diffractive optic provides good phase stability, but suffers from interfering single-beam-bleach signals. This interference is a problem in four-beam transient gratings, but becomes more severe in higher order transient gratings. A simple and low noise method to eliminate this interference is demonstrated in both a four-wave-mixing, first-order-transient-grating experiment and in a six-wave-mixing, second-order-transient-grating experiment.Heterodyne detection with a local oscillator generated by a diffractive optic provides good phase stability, but suffers from interfering single-beam-bleach signals. This interference is a problem in four-beam transient gratings, but becomes more severe in higher order transient gratings. A simple and low noise method to eliminate this interference is demonstrated in both a four-wave-mixing, first-order-transient-grating experiment and in a six-wave-mixing, second-order-transient-grating experiment.
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Journal Title
Journal of the Optical Society of America B: Optical Physics
Volume
26
Issue
12
Copyright Statement
© 2009 OSA. This paper was published in Journal of the Optical Society of America B and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/JOSAB.26.002357. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Subject
Physical Sciences not elsewhere classified
Applied Mathematics
Optical Physics
Electrical and Electronic Engineering