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> Energy band gap > GaAs  Al_{x}Ga_{1x}As  In_{x}Ga_{1x}As  
> Refractive index > GaAs  AlAs  Al_{x}Ga_{1x}As  In_{x}Ga_{1x}As  
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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 firstorder Sellmeier equation 

eq.(1)  
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  
C^{2} = 0.390  empirical coefficient  
>  Numerical values  
Refractive index n of GaAs calculated with eq. (1) 


