NAME

Photonic::WE::R2::Green

VERSION

version 0.011

COPYRIGHT NOTICE

Photonic - A perl package for calculations on photonics and metamaterials.

Copyright (C) 1916 by W. Luis Mochán

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 1, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA

    mochan@fis.unam.mx

    Instituto de Ciencias Físicas, UNAM
    Apartado Postal 48-3
    62251 Cuernavaca, Morelos
    México

SYNOPSIS

   use Photonic::WE::R2::Green;
   my $G=Photonic::WE::R2::Green->new(metric=>$m, nh=>$nh);
   my $GreenTensor=$G->evaluate($epsB);

DESCRIPTION

Calculates the retarded green's tensor for a given fixed Photonic::WE::R2::Metric structure as a function of the dielectric functions of the components. Includes the antysimmetric part, unless it is not desired.

METHODS

• new(metric=>$m, nh=>$nh, smallH=>$smallH, smallE=>$smallE, symmetric=>$s, keepStates=>$k)

  Initializes the structure.

  $m Photonic::WE::R2::Metric describing the structure and some parametres.

  $nh is the maximum number of Haydock coefficients to use.

  $smallH and $smallE are the criteria of convergence (default 1e-7) for Haydock coefficients and continued fraction

  $s flags that you only want the symmetric part of the Green's tensor

  $k is a flag to keep states in Haydock calculations (default 0)

• evaluate($epsB)

  Returns the macroscopic Green's operator for a given value of the dielectric functions of the particle $epsB. The host's response $epsA is taken from the metric.

ACCESORS (read only)

• keepStates

  Value of flag to keep Haydock states

• epsA

  Dielectric function of component A

• epsB

  Dielectric function of componente B

• u

  Spectral variable

• haydock

  Array of Photonic::WE::R2::AllH structures, one for each polarization

• greenP

  Array of Photonic::WE::R2::GreenP structures, one for each direction.

• greenTensor

  The Green's tensor of the last evaluation

• nh

  The maximum number of Haydock coefficients to use.

• nhActual

  The actual number of Haydock coefficients used in the last calculation

• converged

  Flags that the last calculation converged before using up all coefficients

• smallH, smallE

  Criteria of convergence of Haydock coefficients and continued fraction. 0 means don't check.