Spontaneous and Coherent Resonance Raman Scattering by Multimode Systems; Transform Laws for Excitation Profiles

Hizhnyakov, V.; Tehver, I.

doi:10.1002/(sici)1097-4555(199706)28:6<403::aid-jrs121>3.0.co;2-t

Cited by 10 publications

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Transform laws for the excitation profiles of spontaneous and coherent Raman scattering by multimode Jahn-Teller systems

Tehver

1999

J. Raman Spectrosc.

Self Cite

View full text Add to dashboard Cite

The transform relationships for the calculation of the excitation spectra of the spontaneous and coherent Raman scattering (REPs and CEPs, respectively) have been derived which relate the REPs and CEPs to the (measured) absorption spectrum. The case of degenerate excited electronic state coupled to totally and non-totally symmetric vibrations is examined. With linear vibronic coupling, the transform relationships derived earlier for the non-degenerate electronic state hold for totally symmetric and diagonal non-totally symmetric Raman modes. For an off-diagonal non-totally symmetric mode, a different transform law exists, which depends on the coupling with diagonal modes.

show abstract

Transform laws for the excitation profiles of spontaneous and coherent Raman scattering by multimode Jahn-Teller systems

Tehver

1999

J. Raman Spectrosc.

Self Cite

View full text Add to dashboard Cite

show abstract

Theory of coherent anti‐Stokes Raman scattering for mesoscopic particle with complex molecules: angular‐dependent spectrum

Ooi

2009

J Raman Spectroscopy

View full text Add to dashboard Cite

We present a microscopic theory of nonlinear scattering of mesoscopic particle that may be composed of complex molecules. We predict that the spectrum of the scattered field depends on the angle of observation. Transform theory is used to compute the third-order susceptibility for coherent anti-Stokes Raman scattering (CARS) of molecules with known absorption spectrum and vibrational modes. By incorporating the theory into an integral scattering formula, we develop a rigorous theory which leads to powerful numerical experimentation of nonlinear optical process in mesoscopic systems composed of complex molecules and driven by laser pulses with arbitrary shape and spectral content. We obtain an expression for spectral dependent CARS field which includes multiple internal reflection and refraction of the incident fields via Mie theory. The theory is used to study the variations of the CARS spectra and intensity on laser parameters and direction of detection. High-resolution spectra computed for hybrid CARS scheme shows that the relative intensities of the characteristic peaks in the CARS spectrum depend on the direction of detection. This effect can be explained by the interference between the linear response (absorption and dispersion) and the four-wave mixing process in the mesoscopic medium. The theory is useful for nonlinear spectroscopy, microscopy and nanophotonics involving small particles.

show abstract

Excitation profiles of resonant coherent Raman scattering by impurity molecules

Tehver

Kaasik

Hizhnyakov

2011

J Raman Spectroscopy

View full text Add to dashboard Cite

The amplitudes and the excitation profiles of coherent resonant Raman scattering (coherent anti-Stokes and Stokes Raman scattering (CARS and CSRS)) by impurity centers in crystals and/or molecules in solutions are studied, taking into account the coherence of the excited mode and the inhomogeneity of the environment. The CARS and CSRS excitation profiles can directly be related to one-photon absorption when using the transform theory known from spontaneous resonant Raman scattering. The enlargement of the amplitude of the active mode reveals itself in an enhancement of the vibrational overtones. At large amplitudes, a splitting in the profiles caused by the contribution of two turning points of a strong coherent vibration is observed. The inhomogeneous broadening is different in the excitation profiles of CARS and CSRS. The overlapping contributions to spectrally narrow and broad transitions lead to Fano peculiarities. The effects are illustrated by model calculations. Copyright

show abstract

Spontaneous and Coherent Resonance Raman Scattering by Multimode Systems; Transform Laws for Excitation Profiles

Cited by 10 publications

References 13 publications

Transform laws for the excitation profiles of spontaneous and coherent Raman scattering by multimode Jahn-Teller systems

Transform laws for the excitation profiles of spontaneous and coherent Raman scattering by multimode Jahn-Teller systems

Theory of coherent anti‐Stokes Raman scattering for mesoscopic particle with complex molecules: angular‐dependent spectrum

Excitation profiles of resonant coherent Raman scattering by impurity molecules

Contact Info

Product

Resources

About