Home Light • Download Light Scattering in Solids II: Basic Concepts and by M. Cardona, G. Güntherodt (auth.), Professor Dr. Manuel PDF

Download Light Scattering in Solids II: Basic Concepts and by M. Cardona, G. Güntherodt (auth.), Professor Dr. Manuel PDF

By M. Cardona, G. Güntherodt (auth.), Professor Dr. Manuel Cardona, Professor Dr. Gernot Güntherodt (eds.)

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19d), we have split the x(q) for entropy density fluctuations into two terms, one depending on (Oz/6T) v and the other one (az/OV) r, an elasto-optic constant. We shall see in Sect. 14 that the elastooptic constants determine the Brillouin cross section. 19d) is simply proportional to the Brillouin cross section. 19e) Resonance Phenomena 29 where aBrutouinincludes Stokes and antistokes components. The approximation (OZ/~T)v=O is valid for gases but not for solids. 35-1. 4 Inelastic Scattering by Molecules Let us first discuss briefly (and dispose of) the scattering by rotational modes of molecules.

4]. 3 gives the Frank-Condon treatment of scattering efficiencies and establishes the connection with the polarizability theories. 4-6 present perturbation theory treatments of scattering efficiencies using as intermediate states uncorrelated electron-hole pairs. 5 gives a review of the electronic contribution to the optical properties of germanium-zincblende materials and uses the resulting break-up into Eo, Eo+Ao, El, E I + A ~ critical points for the calculation of Raman efficiencies or Raman polarizabilities.

48, 166 (1982) 5. Fleury: Magnetic energy fluctuations: observation by light scattering. Phys. Rev. Lett. 48, 202 (1982) 2. Resonance Phenomena M. 1] was written in 1973-74. At that time, reliable cw dye lasers had become commercially available and their range of tunability was being rapidly extended. It was clear that these lasers were going to become the standard source for light scattering experiments and there was going to be increasing interest in this type of work. 5, 6]. With few exceptions, it was conventional to give the scattering efficiencies in relative units: the efficiencies for second-order scattering were compared with the first-order efficiencies.

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