ELECTRON RELAXATION-TIME MEASUREMENTS IN GAAS/ALGAAS QUANTUM-WELLS - INTERSUBBAND ABSORPTION SATURATION BY A FREE-ELECTRON LASER

被引:23
|
作者
DUBOZ, JY [1 ]
COSTARD, E [1 ]
ROSENCHER, E [1 ]
BOIS, P [1 ]
NAGLE, J [1 ]
BERSET, JM [1 ]
JAROSZYNSKI, D [1 ]
ORTEGA, JM [1 ]
机构
[1] CLIO,LURE,F-91405 ORSAY,FRANCE
关键词
D O I
10.1063/1.359125
中图分类号
O59 [应用物理学];
学科分类号
摘要
The intersubband absorption saturation in GaAs/AlGaAs quantum wells as a function of the incident power has been measured, using picosecond micropulses with a power density up to 1 GW/cm2 delivered by a free-electron laser. The absorption in a sample with a bound-to-bound transition was compared to the absorption in a sample with a bound-to-resonant transition, and it was found that the electron relaxation time in the bound-to-bound transition is about four times shorter than for the bound-to-resonant transition. © 1995 American Institute of Physics.
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页码:6492 / 6495
页数:4
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