>> Center for Theoretical Physics

Activities

Seminars

< | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | >

Seminar on Theoretical and Computational Physics:
TitleIntroduction the invariant imbedding method and its applications
SpeakerDr. Phung Duy Khuong
AffiliationCenter for Theoretical Physics, Institute of Physics
DateTuesday, 04-10-2011
Time10:00 AM
LocationMeeting room on the 1st floor, Institute of Physics, 10 Dao Tan, Ba Dinh, Hanoi
AbstractWe develop a generalized version of the invariant imbedding method, which allows us to solve the electromagnetic wave equations in arbitrarily inhomogeneous stratified media where both the dielectric permittivity and magnetic permeability depend on the strengths of the electric and magnetic fields, in a numerically accurate and efficient manner. We apply our method to a uniform nonlinear slab and find that in the presence of strong external radiation, an initially uniform medium of positive refractive index can spontaneously change into a highly inhomogeneous medium where regions of positive or negative refractive index as well as metallic regions appear. We also study the wave transmission properties of periodic nonlinear media and the influence of nonlinearity on the mode conversion phenomena in inhomogeneous plasmas. We argue that our theory is very useful in the study of the optical properties of a variety of nonlinear media including nonlinear negative index media fabricated using wires and split-ring resonators.