Emission of electromagnetic radiation by coherent vibrational waves in stimulated Raman scattering

Hasselbeck, Michael P.; Schile, L. A.; Stalnaker, D.
July 2004
Applied Physics Letters;7/12/2004, Vol. 85 Issue 2, p173
Academic Journal
Electromagnetic radiation is emitted by the vibrational and collective modes of an opaque solid as the result of impulsive stimulated Raman scattering. Raman scattering of near-infrared femtosecond laser pulses produces coherent longitudinal optical phonon and plasmon oscillations in the semiconductor InSb. These oscillations radiate into free space at THz frequencies and are directly detected. The THz spectra exhibit features consistent with Raman selection rules including interference of allowed and forbidden Raman scattering.


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