NAME

Photonic::NonRetarded::SHChiTensor

VERSION

version 0.010

SYNOPSIS

   use Photonic::NonRetarded::SHChiTensor;
   my $chi=Photonic::NonRetarded::SHChiTensor->new(geometry=>$g,
           $densityA=>$dA, $densityB=>$dB, nh=>$nh, nhf=>$nhf,
           filter=>$f, filterflag=>$ff); 
   my $chiTensor=$chi->evaluate($epsA1, $epsB1, $epsA2, $epsB2);

DESCRIPTION

Calculates the second harmonic susceptibility tensor for a given fixed Photonic::Geometry structure as a function of the dielectric functions of the components.

METHODS

• new(geometry=>$g, densityA=>$da, densityB=>$db, nh=>$nh, nhf=>$nhf[, filter=>$ff][, smallH=>$smallH][, smallE=>$smallE])

  Initializes the structure.

  $g Photonic::Geometry describing the structure

  $da, $db number densities for material A and B (in which units?)

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

  $nhf is the maximum number of Haydock coefficients for the field calculation.

  $ff is a (maybe smooth) cutoff function in reciprocal space to smothen the geometry.

  $smallH and $smallE are the criteria of convergence (default 1e-7) for haydock coefficients and continued fraction. From Photonic::Roles::EpsParams.

• evaluate($epsA1, $epsB1, $epsA2, $epsB2, [kind=>$kind,] [mask=>$mask] )

  Returns the macroscopic second Harmonic susceptibility function for a given value of the dielectric functions of the host $epsA and the particle $epsB at the fundamental 1 and second harmonic 2 frequency. $kind is an optional letter for testing purposes with values 'd' for dipolar, 'q' for quadrupolar, 'e' for external and 'f' for full selfconsistent calculation (the default). Mask is a mask with ones and zeroes, to evaluate the contribution of certain regions to the susceptibility.

ACCESORS (read only)

• geometry

  Photonic::Geometry structure describing the geometry of the metamaterial

• B dims r G GNorm L scale f

  Accesors handled by geometry.

• densityA, densityB

  Dipole entities density in mediums A and B

• nhf

  Maximum number of Haydock coefficients for field calculation

• filter

  Optional filter to multiply by in reciprocal space

• epsA1, epsB1, epsA2, epsB2

  Dielectric functions of components A and B at fundamental and SH frequency

• nrshp

  Array of Photonic::NonRetarded::SHP Haydock SH polarization calculators, one for each direction

• chiTensor

  The dielectric tensor

• nh

  The maximum number of Haydock coefficients to use.

• converged

  Flags that the last calculation converged before using up all coefficients

• smallH smallE

  Criteria of convergence for Haydock coefficients and for fields. 0 means don't check.

ACCESORS (missing)

• u1, u2

  Spectral variables