Experimental and theoretical study of excitonic electroabsorption in high-purity GaAs at room temperature

Abstract

The absorption spectrum in high-purity GaAs has been theoretically studied in the presence of electric field taking into account of excitonic transition and continuum band transition at room temperature. We have calculated the Stark shift, height of exciton peak, linewidth broadening of exciton, extinction ratio as a function of electric field. We also have compared these results with the experimental results and found the close agreement with experimental.