TY - JOUR
T1 - Observation of Normal-Incidence Intersubband Absorption in N-Type Al0.09Ga0.91Sb Quantum Wells
AU - Brown, E. R.
AU - Eglash, S. J.
AU - McIntosh, K. A.
PY - 1992
Y1 - 1992
N2 - Normal-incidence intersubband absorption has been observed in n-type Al0.09Ga0.91Sb quantum wells, as predicted by our previous calculation. The quantum wells were grown on (100)-GaSb and (100)-GaAs substrates and contain an electron sheet density of approximately 7×1011 cm-2. The electrons occupy a two-dimensional L-point subband having ellipsoidal Fermi surfaces. For 7.0-nm-wide quantum wells, the absorption peak occurs at 870 cm-1 (11.5 m), the peak fractional absorption per quantum well is 0.06%, and the full width at half maximum of the absorption profile is 30 meV. The measured absorption strength is within 12% of the theoretical calculation, which was based on the effective-mass method.
AB - Normal-incidence intersubband absorption has been observed in n-type Al0.09Ga0.91Sb quantum wells, as predicted by our previous calculation. The quantum wells were grown on (100)-GaSb and (100)-GaAs substrates and contain an electron sheet density of approximately 7×1011 cm-2. The electrons occupy a two-dimensional L-point subband having ellipsoidal Fermi surfaces. For 7.0-nm-wide quantum wells, the absorption peak occurs at 870 cm-1 (11.5 m), the peak fractional absorption per quantum well is 0.06%, and the full width at half maximum of the absorption profile is 30 meV. The measured absorption strength is within 12% of the theoretical calculation, which was based on the effective-mass method.
UR - https://www.scopus.com/pages/publications/0038982413
UR - https://www.scopus.com/inward/citedby.url?scp=0038982413&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.46.7244
DO - 10.1103/PhysRevB.46.7244
M3 - Article
AN - SCOPUS:0038982413
SN - 0163-1829
VL - 46
SP - 7244
EP - 7247
JO - Physical Review B
JF - Physical Review B
IS - 11
ER -