{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import numpy as np\n",
    "import matplotlib.pyplot as plt\n",
    "\n",
    "from solcore import material, si\n",
    "from solcore.structure import Layer, Structure\n",
    "from solcore.absorption_calculator.rigorous_coupled_wave import calculate_rat_rcwa"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "T = 300\n",
    "# define materials\n",
    "Air = material(\"Air\")(T=T)\n",
    "TiO2 = material(\"TiO2\", sopra=True)(T=T)  # for the nanoparticles\n",
    "GaAs = material(\"GaAs\")(T=T)\n",
    "\n",
    "# define a flat layer and another with circular discs with the same thickness\n",
    "Flat = Layer(si('50nm'), TiO2)\n",
    "NP_layer = Layer(si('50nm'), Air, geometry=[{'type': 'circle', 'mat': TiO2, 'center': (200, 200), 'radius': 50}])\n",
    "\n",
    "flat_struct = Structure([Flat])\n",
    "np_struct = Structure([NP_layer])\n",
    "\n",
    "# And the wavelength in which the solve the problem\n",
    "wl = np.linspace(300, 1000, 150)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "pycharm": {
     "is_executing": true
    }
   },
   "outputs": [],
   "source": [
    "rat_flat = calculate_rat_rcwa(flat_struct, size=((400, 0), (0, 400)), orders=10, wavelength=wl,\n",
    "                              substrate=GaAs, incidence=Air)\n",
    "rat_np = calculate_rat_rcwa(np_struct, size=((400, 0), (0,  400)), orders=10, wavelength=wl,\n",
    "                            substrate=GaAs, incidence=Air)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "pycharm": {
     "is_executing": true,
     "name": "#%%\n"
    }
   },
   "outputs": [],
   "source": [
    "plt.plot(wl, rat_flat[\"R\"], '-k', label=\"Flat (R)\")\n",
    "plt.plot(wl, rat_np[\"R\"], '-b', label=\"Nanoparticles (R)\")\n",
    "plt.plot(wl, rat_flat[\"T\"], '--k', label=\"Flat (T)\")\n",
    "plt.plot(wl, rat_np[\"T\"], '--b', label=\"Nanoparticles (T)\")\n",
    "plt.legend()\n",
    "plt.show()"
   ]
  }
 ],
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