A Raman measurement on a crystal of gallium phosphide probes its zone-centre optical…

PHYSICS · Subjective · Fermi University Physics · Condensed Matter, Materials & Soft Matter · Lattice dynamics and thermal properties of solids · Lattice dynamics and thermal properties of solids

Solid State Physics, Ch Phonons: quantisation, occupation and inelastic scattering

Problem

A Raman measurement on a crystal of gallium phosphide probes its zone-centre optical phonon of energy

\hbar\omega=50.0\,\mathrm{meV}

. The measured ratio of Stokes to anti-Stokes line intensity is

I_S/I_{AS}=9.0

. Neglecting any wavelength-dependent instrumental correction, calculate the sample temperature.

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