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/* Copyright (C) 2005-2022 Massachusetts Institute of Technology
%
% 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 2, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <meep.hpp>
using namespace meep;
using std::complex;
#include "config.h"
double one(const vec &) { return 1.0; }
double rods(const vec &r) {
vec p = r;
while (p.x() < -0.5)
p.set_direction(X, p.x() + 1.0);
while (p.x() > 0.5)
p.set_direction(X, p.x() - 1.0);
while (p.y() < -0.5)
p.set_direction(Y, p.y() + 1.0);
while (p.y() > 0.5)
p.set_direction(Y, p.y() - 1.0);
if (p.x() * p.x() + p.y() * p.y() < 0.3) return 12.0;
return 1.0;
}
void compare(double b, double a, const char *n) {
double thresh = sizeof(realnum) == sizeof(float) ? 1e-4 : 1e-5;
if (fabs(a - b) > fabs(b) * thresh || b != b) {
meep::abort("Failed %s (%g instead of %g, relerr %0.2g)\n", n, a, b, fabs(a - b) / fabs(b));
}
else { master_printf("Passed %s\n", n); }
}
static double dpml = 1.0;
double using_pml_ez(const grid_volume &gv, double eps(const vec &)) {
const double ttot = 30.0;
structure s(gv, eps, pml(dpml));
fields f(&s);
f.add_point_source(Ez, 0.2, 3.0, 0.0, 2.0, gv.center(), complex<double>(0, -2 * pi * 0.2));
while (f.round_time() < ttot)
f.step();
monitor_point p;
f.get_point(&p, gv.center());
return real(p.get_component(Ez));
}
double x_periodic_y_pml(const grid_volume &gv, double eps(const vec &)) {
const double ttot = 30.0;
structure s(gv, eps, pml(dpml, Y));
fields f(&s);
f.add_point_source(Ez, 0.2, 3.0, 0.0, 2.0, gv.center(), complex<double>(0, -2 * pi * 0.2));
f.use_bloch(X, 0.1);
while (f.round_time() < ttot)
f.step();
monitor_point p;
f.get_point(&p, gv.center());
return real(p.get_component(Ez));
}
double x_periodic(const grid_volume &gv, double eps(const vec &)) {
const double ttot = 30.0;
structure s(gv, eps);
fields f(&s);
f.add_point_source(Ez, 0.2, 3.0, 0.0, 2.0, gv.center(), complex<double>(0, -2 * pi * 0.2));
f.use_bloch(X, 0.1);
while (f.round_time() < ttot)
f.step();
monitor_point p;
f.get_point(&p, gv.center());
return real(p.get_component(Ez));
}
double periodic_ez(const grid_volume &gv, double eps(const vec &)) {
const double ttot = 30.0;
structure s(gv, eps);
fields f(&s);
f.add_point_source(Ez, 0.2, 3.0, 0.0, 2.0, gv.center(), complex<double>(0, -2 * pi * 0.2));
vec k;
switch (gv.dim) {
case D1: k = vec(0.3); break;
case D2: k = vec(0.3, 0.4); break;
case D3: k = vec(0.3, 0.5, 0.8); break;
case Dcyl: k = veccyl(0.3, 0.2); break;
}
f.use_bloch(k);
while (f.round_time() < ttot)
f.step();
monitor_point p;
f.get_point(&p, gv.center());
return real(p.get_component(Ez));
}
double metallic_ez(const grid_volume &gv, double eps(const vec &)) {
const double ttot = 10.0;
structure s(gv, eps);
fields f(&s);
f.add_point_source(Ez, 0.2, 3.0, 0.0, 2.0, gv.center(), complex<double>(0, -2 * pi * 0.2));
while (f.round_time() < ttot)
f.step();
monitor_point p;
f.get_point(&p, gv.center());
return real(p.get_component(Ez));
}
double sigma(const vec &) { return 7.63; }
double polariton_ex(const grid_volume &gv, double eps(const vec &)) {
const double ttot = 10.0;
structure s(gv, eps);
s.add_susceptibility(sigma, E_stuff, lorentzian_susceptibility(0.3, 0.1));
fields f(&s);
f.add_point_source(Ex, 0.2, 3.0, 0.0, 2.0, gv.center(), complex<double>(0, -2 * pi * 0.2));
while (f.round_time() < ttot)
f.step();
monitor_point p;
f.get_point(&p, gv.center());
return real(p.get_component(Ex));
}
double polariton_energy(const grid_volume &gv, double eps(const vec &)) {
const double ttot = 10.0;
structure s(gv, eps);
s.add_susceptibility(sigma, E_stuff, lorentzian_susceptibility(0.3, 0.1));
fields f(&s, 0);
f.add_point_source(Ex, 0.2, 3.0, 0.0, 2.0, gv.center(), complex<double>(0, -2 * pi * 0.2));
while (f.round_time() < ttot)
f.step();
return f.field_energy();
}
int main(int argc, char **argv) {
initialize mpi(argc, argv);
verbosity = 0;
master_printf("Testing with some known results...\n");
const double a = 10.0;
compare(-0.0894851, polariton_ex(volone(1.0, a), one), "1D polariton");
compare(0.0863443, polariton_energy(volone(1.0, a), one), "1D polariton energy");
compare(5.20605, metallic_ez(voltwo(1.0, 1.0, a), one), "1x1 metallic 2D TM");
compare(0.883776, using_pml_ez(voltwo(1.0 + 2 * dpml, 1.0 + 2 * dpml, a), one), "1x1 PML 2D TM");
compare(0.110425, x_periodic(voltwo(1.0, 1.0, a), one), "1x1 X periodic 2D TM");
compare(-4.78767, periodic_ez(voltwo(1.0, 3.0, a), rods), "1x1 fully periodic 2D TM rods");
compare(1.12502, periodic_ez(voltwo(1.0, 3.0, a), one), "1x1 fully periodic 2D TM");
compare(0.608815, x_periodic_y_pml(voltwo(1.0, 1.0 + 2 * dpml, a), one),
"1x1 X periodic Y PML 2D TM");
compare(-41.8057, metallic_ez(vol3d(1.0, 1.0, 1.0, a), one), "1x1x1 metallic 3D");
compare(-100.758, x_periodic(vol3d(1.0, 1.0, 1.0, a), one), "1x1x1 X periodic 3D");
compare(-101.398, x_periodic_y_pml(vol3d(1.0, 1.0 + 2 * dpml, 1.0, a), one),
"1x1x1 X periodic Y PML 3D");
compare(-103.844, periodic_ez(vol3d(1.0, 1.0, 1.0, a), rods), "1x1x1 fully periodic 3D rods");
compare(-99.1618, periodic_ez(vol3d(1.0, 1.0, 1.0, a), one), "1x1x1 fully periodic 3D");
return 0;
}
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