TY - JOUR
T1 - Free electron laser-induced bleaching of the intersubband absorption in semiconductor quantum wells
AU - Murdin, B. N.
AU - Helm, M.
AU - Pidgeon, C. R.
AU - Geerinck, K. K.
AU - Hovenyer, N.
AU - Wenckebach, W. Th
AU - van der Meer, A. F G
AU - van Amersfoort, P. W.
PY - 1994/3/1
Y1 - 1994/3/1
N2 - The intensity dependent intersubband absorption in GaAs/AlGaAs quantum wells with a subband separation smaller than the optical phonon energy has been measured with a pulsed far infrared free electron laser (FELIX). Complete bleaching of the absorption is observed at I = 100 kW/cm2. When fitted with a two-level system, the saturation intensity is found to be 10 kW/cm2, which corresponds to a characteristic time constant of 1-2 ps. Possible interpretations are discussed in the situation of finite FEL pulse width. © 1994.
AB - The intensity dependent intersubband absorption in GaAs/AlGaAs quantum wells with a subband separation smaller than the optical phonon energy has been measured with a pulsed far infrared free electron laser (FELIX). Complete bleaching of the absorption is observed at I = 100 kW/cm2. When fitted with a two-level system, the saturation intensity is found to be 10 kW/cm2, which corresponds to a characteristic time constant of 1-2 ps. Possible interpretations are discussed in the situation of finite FEL pulse width. © 1994.
UR - http://www.scopus.com/inward/record.url?scp=0028383555&partnerID=8YFLogxK
M3 - Article
SN - 0168-9002
VL - 341
SP - 178
EP - 180
JO - Nuclear Inst. and Methods in Physics Research, A
JF - Nuclear Inst. and Methods in Physics Research, A
IS - 1-3
ER -