A systematic study in stepped quantum wells of InxGa1-xAs/InyGa1-yAs/GaAs(001) with indium concentration x = 14.9% and y = 6.5% and thicknesses in the range of quasi-two-dimensional behavior of Wannier excitons is performed. Experimental optical spectra are compared with model calculations. For well widths in the range of the pseudo-two-dimensional transition, where the oscillator strength of the exciton odd states is maximized, a large second harmonic generation signal is experimentally observed.
Second harmonic generation in stepped InAsGaAs/GaAs quantum wells
Ferrari L;Selci S;Bruni MR;Schiumarini D;
1997
Abstract
A systematic study in stepped quantum wells of InxGa1-xAs/InyGa1-yAs/GaAs(001) with indium concentration x = 14.9% and y = 6.5% and thicknesses in the range of quasi-two-dimensional behavior of Wannier excitons is performed. Experimental optical spectra are compared with model calculations. For well widths in the range of the pseudo-two-dimensional transition, where the oscillator strength of the exciton odd states is maximized, a large second harmonic generation signal is experimentally observed.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
