Premium
Phonon‐Assisted Two‐Photon Absorption of the Excitonic Molecule in CuCl I. Bare‐Exciton Approach
Author(s) -
Ekardt W.,
Brocksch 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.2220930124
Subject(s) - exciton , phonon , envelope (radar) , absorption (acoustics) , resonance (particle physics) , photon , molecule , line (geometry) , atomic physics , molecular physics , photon energy , two photon absorption , absorption spectroscopy , range (aeronautics) , condensed matter physics , physics , materials science , optics , quantum mechanics , telecommunications , radar , laser , geometry , mathematics , computer science , composite material
Phonon‐assisted two‐photon absorption of biexcitonic levels in CuCl is considered including damping of the nearly resonant excitonic intermediate state. A pronounced structure of the line shape due to resonance effects, threshold effects, and structure in the Fourier transform of the envelope of the excitonic molecule is predicted. A detailed discussion of both temperature and damping effects is given. Large cross sections are predicted. The most favourable energetic range to observe the effects derived here is the low energy tail of the line, on the left of the Γ⅕ exeiton.