| Title | Free-Electron Laser-Induced Bleaching of the Intersubband Absorption in Semiconductor Quantum-Wells |
| Publication Type | Journal Article |
| Year of Publication | 1994 |
| Authors | B.N Murdin, M. Helm, C.R Pidgeon, K.K Geerinck, N. Hovenyer, W.T Wenckebach, A.FG van der Meer, P.W van Amersfoort |
| Journal | Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment |
| Volume | 341 |
| Number | 1-3 |
| Pagination | 178-180 |
| Date Published | Mar 1 |
| ISBN Number | 0168-9002 |
| Abstract | 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. |
| DOI | 10.1016/0168-9002(94)90343-3 |
| PID | df8fd44324361fbb02f330929e53cde9 |
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