Dynamics of Nonequilibrium Broadband Phonon Distributions |
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1/e attenuation distances 3.2 FREQUENCY THz anharmonic interactions anharmonic lifetime anharmonic processes approximately bolometer Bose-Einstein distribution CALL MODE CALL NOTE characteristic impedance circuit collision term condenser lens constantan crystal curves Debye decay delay density detector diffusion coefficient elastic scattering electronic energy flux equation equilibrium experiment experimental Figure film temperature flourescence FORMAT Fourier Sine transform Fourier transform frequency dependence heat pulse heater film heater pulse injected phonons input interface Krytron Laplace transform laser lattice LEGEND Levinson low frequency phonons low-frequency phonons luminescence mode temperature mode temperature versus Model II obtained optical output phonon distribution function phonon frequency phonon propagation phonon-phonon interactions phonons of frequency photodiode photomultiplier Phys Planck distribution probe ions purely diffusive quasi-equilibrium temperature sample shown in Fig sideband slit spatial spectral spectrometer substrate temperature versus frequency thermal THz phonons TYPE vibronic sidebands voltage W.E. Bron W.L. Schaich