# Doppler-free DFWM Spectroscopy as a Probe of Photodissociation Dynamics

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/18645

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 Title: Doppler-free DFWM Spectroscopy as a Probe of Photodissociation Dynamics Creators: Wasserman, T. A. W.; Kandel, S. A.; Zhang, Q.; Arias, A. A.; Vaccaro, P. H. Issue Date: 1993 Publisher: Ohio State University Abstract: Degenerate Four-Wave Mixing (DFWM) spectroscopy has been used to probe the dynamics of photodissociation induced by 266nm excitation of hydrogen peroxide. Spectra recorded for the nascent photofragments exhibit signal-to-noise ratios that are superior to those reported by previous laser-induced fluorescence studies. In addition, the spatial selectivity associated with the Doppler-free nature of this nonlinear optical process has enabled the determination of quantum state-specific angular distributions for the OH radical products. An effective anisotropy parameter of $\beta_{eff} = -0.63 \pm 0.15$ has been obtained, a value in good agreement with that derived from earlier measurements based upon the deconvolution of Doppler profiles. Description: Author Institution: Department of Chemistry, Yale University URI: http://hdl.handle.net/1811/18645 Other Identifiers: 1993-TF-2