Journal article
Amplified total internal reflection: theory, analysis, and demonstration of existence via FDTD
Optics express, Vol.16(3), pp.1903-1914
02/04/2008
Handle:
https://hdl.handle.net/2376/116210
PMID: 18542269
Abstract
The explanation of wave behavior upon total internal reflection from a gainy medium has defied consensus for 40 years. We examine this question using both the finite-difference time-domain (FDTD) method and theoretical analyses. FDTD simulations of a localized wave impinging on a gainy half space are based directly on Maxwell's equations and make no underlying assumptions. They reveal that amplification occurs upon total internal reflection from a gainy medium; conversely, amplification does not occur for incidence below the critical angle. Excellent agreement is obtained between the FDTD results and an analytical formulation that employs a new branch cut in the complex "propagation-constant" plane.
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Details
- Title
- Amplified total internal reflection: theory, analysis, and demonstration of existence via FDTD
- Creators
- Keely J Willis - 1Department of Electrical and Computer Engineering, University of Wisconsin, Madison, WI 53706, USAJohn B SchneiderSusan C Hagness
- Publication Details
- Optics express, Vol.16(3), pp.1903-1914
- Academic Unit
- Electrical Engineering and Computer Science, School of
- Publisher
- United States
- Identifiers
- 99900547406101842
- Language
- English
- Resource Type
- Journal article