Abbreviated Journal Title
Wave-Guide; Band-Gap; Electroabsorption Modulators; Quantum-Wells; Carrier Sweep; Absorption; Gaas/Algaas; Half; Autocorrelator; Algaas; Optics
We report two-photon photocurrent in a GaAs/AlGaAs multiple quantum well laser at 1.55 mu m. Using 1ps pulses, a purely quadratic photocurrent is observed. We measure the device efficiency, sensitivity, as well as the two-photon absorption coefficient. The results show that the device has potential for signal processing, autocorrelation and possibly two-photon source applications at sub-Watt power levels.
Duchesne, D.; Razzari, L.; Halloran, L.; Morandotti, R.; Spring Thorpe, A. J.; Christodoulides, D. N.; and Moss, D. J., "Two-photon photodetector in a multiquantum well GaAs laser structure at 1.55 mu m" (2009). Faculty Bibliography 2000s. 1490.