Premium
Resonance interaction of electronic two‐level states and short‐wave phonon radiation in ruby
Author(s) -
Pauli G.,
Renk K. F.,
Klimke G.,
Kreuzer H. J.
Publication year - 1979
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220950221
Subject(s) - phonon , resonance (particle physics) , range (aeronautics) , condensed matter physics , volume (thermodynamics) , atomic physics , physics , diffusion , materials science , quantum mechanics , composite material
The resonance interaction of 874 GHz phonons with the electronic (Ē, 2Ā)‐two‐level‐states in optically pumped ruby is studied. In a resonance volume containing the two‐level states phonon pulses are generated by optical pumping. The occupation number of these phonons is determined and also their escape time from the resonance volume for a large range of concentrations of two‐level states. A simple diffusion model for the phonon propagation in the resonance volume cannot explain the results. It is suggested that the resonant electron–phonon interaction is dominated by a process of spectral and spatial phonon diffusion.