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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 3.655
900 3.586
950 3.538
1000 3.502
1050 3.475
1100 3.454
1200 3.423
1300 3.401
1400 3.386
1500 3.374
1700 3.358
2000 3.343
 
 
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