Accession Number : AD0471319


Title :   THE EFFECT OF GEOMETRY OF A MEDIUM ON ITS OPTICAL RESPONSE.


Descriptive Note : Technical rept.,


Corporate Author : PENNSYLVANIA UNIV PHILADELPHIA DEPT OF PHYSICS


Personal Author(s) : Burstein, E ; Iwasa, S ; Sawada, Y


Report Date : Aug 1965


Pagination or Media Count : 27


Abstract : The resonance excitation frequencies of an assembly of electric dipole oscillators such as the elementary excitations in a solid, i.e., optical phonon and plasmon, are dependent on the geometry of the medium. For a slab configuration a mathematical treatment is given of the longitudinal and transverse resonance frequencies. For thin (film) slab and oblique incidence, the electromagnetic radiation can couple to the longitudinal, as well as the transverse excitation mode, when the plane of polarization of the electric field is in the plane of incidence. The absorption of power by the excitation modes is characterized by the imaginary part of the shape-dependent dielectric response constant. Data on this constant, derived from thin film oblique incidence measurements, provide information about the resonance frequencies and damping constants of both the transverse and longitudinal excitation modes. (Author)


Descriptors :   *FREQUENCY , GEOMETRY , RESONANCE , PHONONS , ELECTROMAGNETIC RADIATION , ISOTROPISM , OSCILLATORS , HARMONIC GENERATORS , OSCILLATORS , SOLID STATE PHYSICS , THIN FILM STORAGE DEVICES , WAVE PROPAGATION , DAMPING , SELECTION RULES(PHYSICS) , REFLECTANCE , PROPAGATION , DENSITY


Distribution Statement : APPROVED FOR PUBLIC RELEASE