TY - JOUR
T1 - Quantum dots-based all-optical-readout middle-far-infrared imaging
AU - Chen, Gang
AU - Martini, Rainer
PY - 2011
Y1 - 2011
N2 - A quantum dot (QD) middle-far-infrared (MFIR) detection and imaging approach based on all-optical-readout (AORO) is proposed. Using the intersubband (ISB) optical transition to change the interband (IB) absorption, it converts the ISB MFIR signal into the IB near-infrared signal. It might overcome the problems in the electrical readout infrared detection and imaging, such as dark current, low-temperature operation, low resolution, and vulnerability to the high radiation intensity. Based on the In0.5Ga0.5As GaAs lens-shaped QD structure, our calculation shows the potential of this AORO approach for the MFIR detection and high-resolution imaging, the potential for room-temperature operation, and the ability for frequency selectivity and spectrum scanning.
AB - A quantum dot (QD) middle-far-infrared (MFIR) detection and imaging approach based on all-optical-readout (AORO) is proposed. Using the intersubband (ISB) optical transition to change the interband (IB) absorption, it converts the ISB MFIR signal into the IB near-infrared signal. It might overcome the problems in the electrical readout infrared detection and imaging, such as dark current, low-temperature operation, low resolution, and vulnerability to the high radiation intensity. Based on the In0.5Ga0.5As GaAs lens-shaped QD structure, our calculation shows the potential of this AORO approach for the MFIR detection and high-resolution imaging, the potential for room-temperature operation, and the ability for frequency selectivity and spectrum scanning.
KW - Infrared detectors
KW - infrared imaging
KW - optical modulation
KW - quantum dots
UR - http://www.scopus.com/inward/record.url?scp=79951985850&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79951985850&partnerID=8YFLogxK
U2 - 10.1109/JQE.2010.2080260
DO - 10.1109/JQE.2010.2080260
M3 - Article
AN - SCOPUS:79951985850
SN - 0018-9197
VL - 47
SP - 285
EP - 292
JO - IEEE Journal of Quantum Electronics
JF - IEEE Journal of Quantum Electronics
IS - 3
M1 - 5716914
ER -