Inhibition and enhancement of two-photon absorption in a four-level inverted-Y semiconductor quantum well system

2012 ◽  
Vol 44 (7-8) ◽  
pp. 1267-1271 ◽  
Author(s):  
Zhiping Wang ◽  
Benli Yu ◽  
Feng Xu ◽  
Shenglai Zhen ◽  
Xuqiang Wu ◽  
...  
Keyword(s):  
Quantum Well ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Semiconductor Quantum Well

Non-Resonant Two-Photon Absorption in Quantum Well Infrared Detectors

1994 ◽  
pp. 493-500 ◽  
Author(s):  
E. Dupont ◽  
P. B. Corkum ◽  
P. W. Dooley ◽  
H. C. Liu ◽  
P. H. Wilson ◽  
...  
Keyword(s):  
Quantum Well ◽  
Infrared Detectors ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon

Double two-photon absorption in an asymmetric stepped quantum well in the terahertz range

2019 ◽  
Vol 130 ◽  
pp. 560-568 ◽  
Author(s):  
A. Samyh ◽  
W. Salhi ◽  
A. Rajira ◽  
H. Akabli ◽  
A. Abounadi ◽  
...  
Keyword(s):  
Quantum Well ◽  
Terahertz Range ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon

TWO-PHOTON-ABSORPTION SPECTRA OF QUANTUM-WELL EXCITONS IN STATIC ELECTRIC FIELDS

1991 ◽  
Vol 05 (17) ◽  
pp. 1133-1138
Author(s):  
KAZUHITO FUJII ◽  
AKIRA SHIMIZU ◽  
JOHAN BERGQUIST ◽  
SOTOMITSU IKEDA ◽  
TAKESHI SAWADA
Keyword(s):  
Electric Field ◽  
Quantum Well ◽  
Absorption Spectra ◽  
Electric Fields ◽  
Band Gap Energy ◽  
Photon Absorption ◽  
Static Electric Field ◽  
Quantum Well Structures ◽  
Two Photon Absorption ◽  
Two Photon

We have measured two-photon-absorption spectra of GaAs/Al 0.4 Ga 0.6 As quantum-well structures in a static electric field for photon energies near half the band gap energy, and found drastic field-induced-changes in the spectra. The two-photon-absorption peak at half the energy of the lowest light-hole exciton is induced by the static electric field normal to the quantum well layers, in agreement with a theory that takes account of quasi-two-dimensional exciton effects. With increasing the electric field, however, this peak grows more drastically than the theoretical prediction, and it approaches a large value predicted by another simplified theory based on a two-level model.

NONLINEAR QUANTUM WELL INFRARED PHOTODETECTOR

2002 ◽  
Vol 11 (04) ◽  
pp. 433-443 ◽  
Author(s):  
H. C. LIU ◽  
E. DUPONT ◽  
M. ERSHOV
Keyword(s):  
Quantum Well ◽  
Photon Absorption ◽  
Short Pulses ◽  
Two Photon Absorption ◽  
Nonlinear Properties ◽  
Two Photon ◽  
Quantum Well Infrared Photodetectors ◽  
Research Activities ◽  
Nonlinear Quantum ◽  
Nonlinear Behaviors

Nonlinear processes in quantum well infrared photodetectors (QWIP) are reviewed. Being an intersubband dipole transition based photoconductor, the nonlinear behaviors in QWIPs are caused by both the (extrinsic) photoconductive transport mechanism and (intrinsic) nonlinear optical processes. Extrinsic nonlinearity leads to a degradation of QWIP performance at high incident power or low operating temperatures. Some intrinsic nonlinear QWIP properties are useful in applications, such as in autocorrelation of short pulses by two-photon absorption. The general area of QWIP nonlinear properties has not been extensively investigated. We point out some directions for further studies and hope to stimulate more research activities.

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