Differential heterodyne detection with diffractive optics for multidimensional transient-grating spectroscopy
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Berg, Mark
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Abstract
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 of the Optical Society of America B: Optical Physics
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26
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12
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© 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.
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Physical Sciences not elsewhere classified
Applied Mathematics
Optical Physics
Electrical and Electronic Engineering