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Refractive index n of GaAs

Contents  
   
 
Sellmeyer Equation  
 

In the energy range below or near the fundamental absorption edge the dispersion of the refractive index n(l) of GaAs can be calculated by the first-order Sellmeier equation

 
 
  Formula refractive index of GaAs eq.(1)  
  down
  In this equation the symbols and constants have the following meaning in the case of GaAs at room temperature:
 
  l light wavelength in the vacuum in µm  
  A = 8.950 empirical coefficient  
  B = 2.054 empirical coefficient  
  C2 = 0.390 empirical coefficient  
 
Numerical values  
 
 

Refractive index n of GaAs calculated with eq. (1)

 
 
 
l(nm) n(GaAs)) Graph Eg(x)
850 3.662
900 3.593
950 3.545
1000 3.510
1050 3.483
1100 3.461
1200 3.431
1300 3.409
1400 3.393
1500 3.382
1700 3.365
2000 3.351
 
 
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