Optically active surface polaritons

Authors
Citation
De. Nelson, Optically active surface polaritons, J OPT SOC B, 17(9), 2000, pp. 1571-1578
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
ISSN journal
0740-3224 → ACNP
Volume
17
Issue
9
Year of publication
2000
Pages
1571 - 1578
Database
ISI
SICI code
0740-3224(200009)17:9<1571:OASP>2.0.ZU;2-T
Abstract
A new wave-vector-space method of finding electromagnetic wave propagation in bounded media without use of boundary conditions is applied to finding s urface polaritons on an optically active anaxial crystal. Because a proper constitutive derivation of the optical-activity tensor shows that the quadr upolar interaction plays an important role, the continuity of the tangentia l component of the H field is no longer a valid boundary condition. In its absence the use of the wave-vector-space method that uses no boundary condi tions is essential. Another unique aspect of the wave-vector-space method i s that it derives a surface-nonlocality tensor that accounts for the altere d nonlocal interaction of optical activity near the surface. The dispersion relation of the surface polariton is found to be independent of both the b ulk optical-activity parameter and the surface nonlocality parameters. The electric field profile is dependent on the bulk optical-activity parameter to first order. This dependence causes the surface polariton to lose the TM -mode character that it has in a nonoptically active crystal. Surprisingly, the surface-nonlocality parameters also disappear from the field profile t o first order. This complete disappearance to first order of the nonlocalit y parameters is a surprising and physically unexplained result because it d oes not happen in the transmission and reflection problem or in the optical ly active waveguide problem. (C) 2000 Optical Society of America [S0740-322 4(00)01608-8].