Pulse propagation in spatially dispersive media
- 1 February 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 27 (2) , 1044-1052
- https://doi.org/10.1103/physreva.27.1044
Abstract
The propagation of a Gaussian electromagnetic (optical) pulse with center frequency (laser) through a spatially dispersive exciton-polariton medium is investigated by a combination of analytical and numerical methods. The analysis used extends previous work by Garrett and McCumber to the multiwave coupled exciton-polariton case. With the assumption of normal incidence on a semi-infinite medium, laser frequencies very close to exciton resonance and far from resonance are studied. Numerical results are obtained for power spectrum and amplitude profile for parameters suitable to exciton (a fairly typical semiconductor). For pulses with or the pulse remains essentially Gaussian, and its peak propagates with velocity close to the classical group velocity , where is the polariton branch index and is the real part of the propagation wave number. The power spectrum shows a crossover from lower to upper branch as the laser frequency is varied through resonance. Some comparison with experiments on CuCl, GaAs, CdSe, and CdS semiconductors is also given.
Keywords
This publication has 17 references indexed in Scilit:
- Chu and Wong RespondPhysical Review Letters, 1982
- Pulse Propagation in an Absorbing MediumPhysical Review Letters, 1982
- Linear Pulse Propagation in an Absorbing MediumPhysical Review Letters, 1982
- Picosecond Time of Flight Measurements of Excitonic Polariton in CuClJournal of the Physics Society Japan, 1979
- Polariton Wave Packet Propagation in the Exciton Resonance of a SemiconductorPhysical Review Letters, 1979
- Concept of Group Velocity in Resonant Pulse PropagationPhysical Review A, 1971
- Propagation of Small-Area Pulses of Coherent Light through a Resonant MediumPhysical Review A, 1970
- The propagation of electromagnetic energy through an absorbing dielectricJournal of Physics A: General Physics, 1970
- Propagation of a Gaussian Light Pulse through an Anomalous Dispersion MediumPhysical Review A, 1970
- Distortionless Propagation of Light Through an Optical MediumPhysical Review Letters, 1969