Semiclassical formalism of optical absorption

Journal Article · Tue Aug 01 04:00:00 EDT 1989 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.40.1240· OSTI ID:5961849

Horovitz, B; Bishop, A R; Phillpot, S R

A semiclassical formalism for the optical absorption in a coupled electron-ion system is developed. The formalism assumes (a) an initial periodic trajectory whose frequency is much lower than electronic energies, and (b) a short-memory condition, i.e., the excited-state trajectories diverge away from the initial one within one period. The result shows nonadiabatic features such as level broadening, sidebands, and tails in nonclassical regimes. The formalism is demonstrated on a model for polyacetylene and can account for unusual absorption data.

• Research Organization: Department of Physics, Ben-Gurion University, Beer-Sheva 84105, Israel(US); Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545; Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5961849
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 40:3; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTIVITY
ADIABATIC APPROXIMATION
HYDROCARBONS
MOLECULES
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
POLYACETYLENES
POLYENES
POLYMERS
SEMICLASSICAL APPROXIMATION