src/material/TiSi2/TiSi2_Optical.cc

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*              8888888         88888888         88888888                    */
   4 /*            8                8                8                            */
   5 /*           8                 8                8                            */
   6 /*           8                  88888888         88888888                    */
   7 /*           8      8888                8                8                   */
   8 /*            8       8                 8                8                   */
   9 /*              888888         888888888        888888888                    */
  10 /*                                                                           */
  11 /*       A Two-Dimensional General Purpose Semiconductor Simulator.          */
  12 /*                                                                           */
  13 /*  GSS material database Version 0.4                                        */
  14 /*  Last update: Feb 17, 2006                                                */
  15 /*                                                                           */
  16 /*  Gong Ding                                                                */
  17 /*  gdiso@ustc.edu                                                           */
  18 /*  NINT, No.69 P.O.Box, Xi'an City, China                                   */
  19 /*                                                                           */
  20 /*****************************************************************************/
  21 //
  22 // Material Type: TiSi2
  23
  24 // We do not have the real data for TiSi2, use parameters for Al instead
  25
  26 #include "PMI.h"
  27
  28 typedef struct
  29 {
  30    PetscScalar  wavelength;
  31    PetscScalar  RefractionIndexRe;
  32    PetscScalar  RefractionIndexIm;
  33 } table;
  34
  35
  36 static table  Al[] = {
  37 {0.0165,  1.010,  0.024},
  38 {0.0172,  1.020,  0.0035},
  39 {0.0376,  0.902,  0.0102},
  40 {0.0620,  0.668,  0.0268},
  41 {0.0800,  0.258,  0.0777},
  42 {0.1033,  0.0328, 0.791},
  43 {0.1600,  0.0765, 1.740},
  44 {0.2066,  0.130,  2.39},
  45 {0.3000,  0.276,  3.61},
  46 {0.4000,  0.490,  4.86},
  47 {0.5000,  0.769,  6.08},
  48 {0.6000,  1.20,   7.26},
  49 {0.7000,  1.83,   8.31},
  50 {0.8000,  2.80,   8.45},
  51 {0.9000,  2.06,   8.30},
  52 {1.0000,  1.35,   9.58},
  53 {1.2000,  1.21,   12.0},
  54 {1.5000,  1.38,   15.4},
  55 {2.0000,  2.15,   20.7},
  56 {4.0000,  6.43,   39.8},
  57 {10.000,  25.3,   89.8},
  58 };
  59
  60 class GSS_TiSi2_Optical : public PMIC_Optical
  61 {
  62 private:
  63   int   table_size;
  64 public:
  65   complex<PetscScalar> RefractionIndex(PetscScalar lamda, PetscScalar Eg=0.0, PetscScalar Tl=1.0) const
  66   {
  67     complex<PetscScalar> n(1.0,0.0);
  68     if(lamda<Al[0].wavelength)
  69       return complex<PetscScalar> (Al[0].RefractionIndexRe,Al[0].RefractionIndexIm);
  70     if(lamda>Al[table_size-1].wavelength)
  71       return complex<PetscScalar> (Al[table_size-1].RefractionIndexRe,Al[table_size-1].RefractionIndexIm);
  72     for(int i=0;i<table_size-1;i++)
  73     {
  74        if(lamda>=Al[i].wavelength && lamda<=Al[i+1].wavelength)
  75        {
  76           complex<PetscScalar> n1(Al[i].RefractionIndexRe,Al[i].RefractionIndexIm);
  77           complex<PetscScalar> n2(Al[i+1].RefractionIndexRe,Al[i+1].RefractionIndexIm);
  78           PetscScalar d1 = lamda-Al[i].wavelength;
  79           PetscScalar d2 = Al[i+1].wavelength-lamda;
  80           n = (n1*d2 + n2*d1)/(d1+d2);
  81           break;
  82        }
  83     }
  84     return n;
  85   }
  86
  87   // constructions
  88 public:
  89   GSS_TiSi2_Optical(const PMIC_Environment &env):PMIC_Optical(env)
  90   {
  91      table_size = sizeof(Al)/sizeof(table);
  92      //the wave length should be scaled
  93      for(int i=0;i<table_size;i++)
  94      {
  95         Al[i].wavelength*=um;
  96      }
  97   }
  98
  99   ~GSS_TiSi2_Optical(){}
 100 }
 101 ;
 102
 103 extern "C"
 104 {
 105   PMIC_Optical*  PMIC_TiSi2_Optical_Default (const PMIC_Environment& env)
 106   {
 107     return new GSS_TiSi2_Optical(env);
 108   }
 109 }