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dc.creatorAndrews, John R.en_US
dc.creatorHochstrasser, Robin M.en_US
dc.date.accessioned2006-06-15T14:18:45Z
dc.date.available2006-06-15T14:18:45Z
dc.date.issued1979en_US
dc.identifier1979-WC-03en_US
dc.identifier.urihttp://hdl.handle.net/1811/11102
dc.description$^{1}$ T. Yajima and H. Souma, Phys. Rev. A17, 309 (1978). J. J. Song, J. H. Lee and M. D. Levensen, Phys. Rev. 417, 1439 (1978).en_US
dc.descriptionAuthor Institution:en_US
dc.description.abstractWe have investigated the frequency dependence of the transmission of a probe laser beam ($\omega_{1}$) on the presence in the sample of a strong pump laser beam ($\omega_{2}$). The strong resonances occur when $\omega_{1}=\omega_{2}$, and when $\omega_{1}$ and $\omega_{2}$ are resonant with molecular one photon transitions. This $\chi^{3}$ process can in principle provide information about transverse and longitudinal relaxation processes in the resonant states from an analysis of the observed $lineshape^{1}$. Polarization spectra have been taken in the region $\omega_{1}=\omega_{2}$ for solutions of iron tetraphenylporphyrin and the protonated Schiff’s base of trans-retinal. The $\chi^{(3)}$ nature of the process has been confirmed by the intensity dependence of the signal. The observed resonance widths were comparable to the laser linewidths of ca. $1 cm^{-1}$ at several values of $\omega_{2}$. We plan further investigate these and other systems using narrow-band lasers to further resolve the resonances. We are also investigating theoretically the dependence of this process on laser pulse shape and spectral bandwidth. We will discuss the practical utility of this potentially powerful new spectroscopic method foe exposing ultrafast molecular relaxation processes.en_US
dc.format.extent101582 bytes
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dc.language.isoEnglishen_US
dc.publisherOhio State Universityen_US
dc.titleINVESTIGATION OF MOLECULAR RELAXATION PROCESSES USING POLARIZATION SPECTROSCOPYen_US
dc.typearticleen_US


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