TY - JOUR
T1 - Intersubband transitions, infrared detectors, and optical nonlinearities in SiGe multiquantum wells
AU - Helm, M.
AU - Kruck, P.
AU - Fromherz, T.
AU - Seto, M.
AU - Bauer, G.
AU - Nuetzel, J. F.
AU - Abstreiter, G.
PY - 1997
Y1 - 1997
N2 - A survey is given about the potential use of Si/SiGe heterostructures for applications in the mid-infrared spectral range. We discuss theoretical foundations and experiments of intersubband absorption in p-type Si/SiGe quantum wells and show that due to the complex valence-band structure, normal-incidence absorption can be observed. On the basis of these quantum wells, mid-infrared detectors were fabricated and characterized in terms of responsivity, dark current and detectivity. In asymmetric, compositionally stepped quantum wells second harmonic generation of CO2 laser radiation has been demonstrated.
AB - A survey is given about the potential use of Si/SiGe heterostructures for applications in the mid-infrared spectral range. We discuss theoretical foundations and experiments of intersubband absorption in p-type Si/SiGe quantum wells and show that due to the complex valence-band structure, normal-incidence absorption can be observed. On the basis of these quantum wells, mid-infrared detectors were fabricated and characterized in terms of responsivity, dark current and detectivity. In asymmetric, compositionally stepped quantum wells second harmonic generation of CO2 laser radiation has been demonstrated.
UR - http://www.scopus.com/inward/record.url?scp=0030682336&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:0030682336
SN - 0272-9172
VL - 450
SP - 201
EP - 211
JO - Materials Research Society Symposium - Proceedings
JF - Materials Research Society Symposium - Proceedings
T2 - Proceedings of the 1996 MRS Fall Meeting
Y2 - 2 December 1996 through 6 December 1996
ER -