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- W2219134592 abstract "The third order nonlinearity at the exciton peak wavelength in GaAs/AlGaAs multiple quantum well material can be used to switch the optical output between two guides. This effect depends on the generation of carriers in the wells and, therefore, the switching time will be limited by the lifetime of these carriers. This lifetime can be measured by investigating the time dependence of the photoluminescence of the semiconductor. A photoluminescence phase shift method was used to measure carrier lifetimes. The system can be used to a wavelength of 1.65 mu m and also has 100 ps time resolution. The material investigated was Ga/sub 0.47/In/sub 0.53/As/InP multiple quantum wells grown by molecular beam epitaxy. The free carrier lifetime in an MBE grown Ga/sub 0.47/In/sub 0.53/As/InP MQW structure has been measured and was found to be 4 ns. >" @default.
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- W2219134592 date "1988-10-27" @default.
- W2219134592 modified "2023-09-24" @default.
- W2219134592 title "Time-resolved photoluminescence measurements on Ga/sub 0.47/In/sub 0.53/As/InP multiple quantum well structures" @default.
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