Accession Number : ADA292187

Title :   Quantum Optical Sources in Photonic Band Structures. Self-Induced Transparency in Photonic Band Structures: Gap Solitons Near Absorption Resonances.

Descriptive Note : Interim rept. no. 3, Dec 94-Feb 95

Corporate Author : WEIZMANN INST OF SCIENCE REHOVOT (ISRAEL) DEPT OF CHEMICAL PHYSICS

Personal Author(s) : Kurizki, Gershon

PDF Url : ADA292187

Report Date : FEB 1995

Pagination or Media Count : 4

Abstract : Pulse propagation in a non-uniform resonant medium, e.g., a periodic array of resonant films, can destroy self- induced transparency (SIT) (1), because the pulse area is then split between the forward and backward (reflected) coupled waves, and is no longer conserved (2). Should we then anticipate severely hampered transmission through a medium whose resonance lies in a reflective spectral domain (photonic band gap) of a periodically-layered structure (a Bragg reflector)? We have shown analytically that it is possible for the pulse to overcome the band-gap reflection and produce SIT in a near-resonant medium embedded in a Bragg reflector. The predicted SIT propagation is a principally new type of a gap soliton, which does not obey any of the familiar soliton equations, such as the non-linear Schridinger equation (NLSE) or the sine-Gordon equation. Its spatio-temporal form and intensity dependence are shown here to be distinct from the extensively - studied gap solitons in Kerr-non-linear Bragg reflectors (3), which are described by the NLSE. In treatments of bidirectional field propagation in media with arbitrary spatial distribution of near-resonant atoms (4) the Bloch equations for the population inversion and polarization are entangled in a fashion which leads to an infinite hierarchy of equations for successive spatial harmonics.

Descriptors :   *QUANTUM THEORY, *PHOTONICS, COUPLING(INTERACTION), PROPAGATION, SPATIAL DISTRIBUTION, OPTICAL PROPERTIES, POLARIZATION, HARMONICS, DIELECTRICS, INTENSITY, ENERGY GAPS, REFLECTION, POPULATION, SPECTRA, LIGHT PULSES, RESONANCE, INVERSION, REFLECTORS, SOLITONS, ENERGY BANDS, BRAGG ANGLE, TRANSPARENCIES.

Subject Categories : Optics
      Quantum Theory and Relativity

Distribution Statement : APPROVED FOR PUBLIC RELEASE