A new ultrafast technique for measuring the terahertz dynamics of chiral molecules: The theory of optical heterodyne-detected Raman-induced Kerr optical activity

Wynne, Klaas

doi:10.1063/1.1937390

Cited by 2 publications

(1 citation statement)

References 67 publications

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“…The basic theory for Raman optical activity (ROA) was developed in 1969, with the effect being ascribed to the interference between scattered waves by the chiral centers of a molecule. In 2005, a theory was developed for the Raman modes at intermediate frequencies in which the optical heterodyne-detected Raman-induced Kerr-effect spectroscopy was combined with ROA (OHD-RIKOA) . This OHD-RIKOA method allowed several modes to be distinguished, thus increasing the structural information that could be extracted with an enhancement in the signals associated with optical activity.…”

Section: Introductionmentioning

confidence: 99%

Ellipsometric Raman Spectroscopy

et al. 2016

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We introduce a new experimental technique referred to as ellipsometric Raman spectroscopy (ERS) to quantify the Raman optical activity (ROA) where ellipsometry is combined with Raman spectroscopy. The Stokes parameters were determined for Raman scattered light using Fourier decomposition in measurements with achromatic optical components in a nine-point method. We tested the methodology with ultrapure water, a well-known chiral alcohol, and a chiral polymer, and we show that ERS allows for studying not only the vicinities of chiral carbons but also molecular species coupled to form chiral structures. Furthermore, in ERS, isotropic and anisotropic scattering contribute equally, thus making it possible to analyze the low-wavenumber region in samples such as the chiral polymer studied here, for which the ROA signal probably arises mainly from isotropic scattering.

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Section: Introductionmentioning

confidence: 99%

Ellipsometric Raman Spectroscopy

et al. 2016

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Chirality-induced signals in coherent multidimensional spectroscopy of excitons

Abramavičius

Mukamel

2006

The Journal of Chemical Physics

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The nonlocal second- and third-order susceptibilities of an isotropic ensemble of aggregates are calculated by solving the nonlinear exciton equations which map the system into coupled anharmonic oscillators. Both electric and magnetic contributions are included using the minimal-coupling Hamiltonian. The various tensor components are evaluated to first order in the optical wave vector k. Additional structural information about the interchromophore distances, which is not accessible through zeroth-order contributions (the dipole approximation), is contained to the first order in k. New resonant second- and third-order signals predicted for chiral molecules provide multidimensional extensions of circular dichroism spectroscopy. Numerical simulations demonstrate the sensitivity of third-order signals to the secondary structural motiffs of peptides.

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A new ultrafast technique for measuring the terahertz dynamics of chiral molecules: The theory of optical heterodyne-detected Raman-induced Kerr optical activity

Cited by 2 publications

References 67 publications

Ellipsometric Raman Spectroscopy

Ellipsometric Raman Spectroscopy

Chirality-induced signals in coherent multidimensional spectroscopy of excitons

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