@article{5804,
  author = {B. N. Murdin and M. KamalSaadi and C. M. Ciesla and C. R. Pidgeon and Cjgm Langerak and R. A. Stradling and E. Gornik},
  title = {Landau level lifetimes in an InAs/AlSb quantum well determined by a picosecond far-infrared pump-probe technique},
  abstract = {We present measurements of Landau level lifetimes in a doped quantum well structure of InAs/AlSb using a combination of pump-probe and saturation spectroscopy measurements. The cyclotron resonance was studied using far-infrared radiation from a free-electron laser has yielded the energy relaxation lifetime as a function of applied magnetic field, in the range h omega(c) = 14.5 to 18.5 meV. An energy of 15 meV corresponds to the magnetophonon resonance Delta l h omega(c) = h omega(LO) with Delta l=2. The lifetime at this energy is at or below the resolution limit of the pump-probe measurement: which is 10 ps. The results both at T = 4 K and 80 K, show that the Landau level lifetime, tau is 50 +/- 5 ps off resonance. The so-called ''LO phonon bottleneck'' is evidently important in quenching the relaxation away from resonance.},
  year = {1997},
  journal = {Physica Status Solidi B-Basic Research},
  volume = {204},
  number = {1},
  pages = {155-158},
  month = {Nov},
  isbn = {0370-1972},
  language = {eng},
}