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

Champak Khurmi | Zendy; Mark A. Berg | Zendy

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

Author(s) -

Champak Khurmi,

Mark A. Berg

Publication year - 2009

Publication title -

journal of the optical society of america b

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.741

H-Index - 144

eISSN - 1520-8540

pISSN - 0740-3224

DOI - 10.1364/josab.26.002357

Subject(s) - grating , optics , transient (computer programming) , heterodyne (poetry) , interference (communication) , local oscillator , heterodyne detection , physics , diffraction grating , beam (structure) , diffraction , four wave mixing , materials science , phase noise , nonlinear optics , laser , telecommunications , computer science , acoustics , channel (broadcasting) , operating system

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.Full Tex

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