Scattering of Light by Crystals

Broadband light scattering of two relaxation processes in relaxor ferroelectric0.93Pb(Zn1/3Nb2/3Tsukada1, Kojima2 2008Phys. Rev. B953810View full textAdd to dashboardCite

“…By considering the elasto-optical coefficient and macroscopic cubic symmetry of PZN-0.07PT, it is apparent that two peaks of LA and TA phonons are related to the complex-elastic-stiffness constants c 11 ‫ء‬ and c 44 ‫ء‬ , respectively. 21 Besides acoustic phonons, the CP is observed in the broad frequency range. The CP develops with a decrease in temperature and its intensity becomes maximum around T C-T .…”

Comparing phonon dephasing lifetimes in diamond using Transient Coherent Ultrafast Phonon Spectroscopy

“…The samples were all polished with faces on 〈100〉. This is a convenient reference orientation that samples one phonon mode such that polarization selection rules produce output Stokes light orthogonally polarized to the input [13]. The Stokes-to-pump-photon ratio is of order 10 − 12 .…”

“…The phonon creation operator is given byB † ðt ′ Þ and κ represents the coupling responsible for the Stokes creation, which is the product of various matrix elements associated with the different exciton-phonon interactions in Stokes generation [13].…”

Structural and magnetic properties of isovalently substituted multiferroic BiFeO3: Insights from Raman spectroscopy

“…However, the Raman tensors used in Ref. 23 contains a large antisymmetric component, while vibrational Raman tensors should be completely symmetric, 50 putting further doubts about the validity of the assignment provided there. Indeed, phonon assignments in BiFeO 3 using nearly the same technique but symmetric Raman tensors gives an assignment in line with the one adopted in this article.…”