# Far-infrared generation by doubly resonant different frequency mixing in a coupled quantum well

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- Quantum capacitance devices. Luryi, Serge // Applied Physics Letters;2/8/1988, Vol. 52 Issue 6, p501
Two-dimensional electron gas (2DEG) in a quantum well or inversion layer, unlike an ordinary grounded metallic plane, does not completely screen an applied transverse electric field. Owing to its Fermi degeneracy energy, a 2DEG manifests itself as a capacitor in series, whose capacitance per...

- Two-dimensional electron gas in double quantum wells with tilted bands. Timofeev, V. B.; Larionov, A. V.; Dorozhkin, P. S.; Bayer, M.; Forchel, A.; Straka, J. // JETP Letters;6/10/97, Vol. 65 Issue 11, p877
When a voltage is applied to double quantum wells based on AlGaAs/GaAs heterostructures with contact regions (nï¿½iï¿½n structures), a two-dimensional (2D) electron gas appears in one of the quantum wells. Under illumination which generates electronï¿½hole pairs, the photoexcited holes...

- Exciton-electron interaction in quantum wells with a two dimensional electron gas of low density. Ossau, W.; Yakovlev, D. R.; Hu, C. Y.; Kochereshko, V. P.; Astakhov, G. V.; Suris, R. A.; Christianen, P. C. M.; Maan, J. C. // Physics of the Solid State;May99, Vol. 41 Issue 5, p751
II-VI quantum-well structures containing a 2DEG of low density have been investigated by means of polarized photoluminescence, photoluminescence excitation and reflectivity in external magnetic fields up to 20 T. The spin splittings of the exciton X and the negatively charged exciton X[sup -]...

- Two-dimensional electron gas in delta-doped double quantum wells for photodetector application. Lo, Ikai; Chang, Y.C. // Journal of Applied Physics;6/15/1997, Vol. 81 Issue 12, p8112
Presents a study on the two-dimensional electron gas in delta-doped double quantum wells using the Shubnikov-de Haas measurement. Prevention of the electron coupling in the two wells by the delta-doping layer at the central barrier; Proposed delta-doped multiple quantum well structure for...

- Microwave mixing and noise in the two-dimensional electron gas medium at low temperatures. Yang, J.X.; Li, J. // Applied Physics Letters;4/10/1995, Vol. 66 Issue 15, p1983
Examines the use of microwave mixing and noise measurement techniques to characterize the energy relaxation and noise phenomena for the two-dimensional electron gas (2DEG) medium in modulation-doped quantum wells. Basic properties of 2DEG medium; Range of microwave frequencies utilized in the...

- Electronic parameters of the two-dimensional electron gas in modulation-doped single quantum wells due to an embedded deep step layer. Kim, T. W.; Lee, D. U.; Choo, D. C.; Jung, M.; Yoo, K. H.; Song, M. S.; Yeo, T.; Comanescu, G.; McCombe, B. D.; Kim, M. D. // Journal of Applied Physics;3/1/2001, Vol. 89 Issue 5, p2649
The Shubnikov-de Haas (S-dH) measurements at 1.5 K clearly demonstrated the existence of a two-dimensional electron gas (2DEG) in the modulation-doped Al[sub 0.25]Ga[sub 0.75]As/In[sub y]Ga[sub 1-y]As/GaAs single and step quantum wells, and the fast Fourier transformation results for the S-dH...

- Magnetotransport, magneto-optical, and electronic subband studies in InxGa1-xAs/In0.52Al0.48As one-side-modulation-doped asymmetric step quantum wells. Kim, T. W.; Jung, M.; Lee, D. U.; Yoo, Keon-Ho; Yoo, Kyung-Hwa // Applied Physics Letters;9/16/1996, Vol. 69 Issue 12, p1752
Shubnikovâ€“de Haas (SdH), Van der Pauw Hall-effect, and cyclotron resonance measurements on InxGa1-xAs/In0.52Al0.48As asymmetric step quantum wells were carried out to investigate the electrical properties of a free electron gas and to determine the effective mass of the electron gas, the...

- GaInAs-InP multiquantum well structures grown by metalorganic gas phase epitaxy with adducts. Scholz, F.; Wiedemann, P.; Benz, K. W.; Tränkle, G.; Lach, E.; Forchel, A.; Laube, G.; Weidlein, J. // Applied Physics Letters;4/7/1986, Vol. 48 Issue 14, p911
We report the first successful growth of GaInAs-InP multiquantum well structures by metalorganic gas phase epitaxy with adducts in one single reactor. The properties of the two-dimensional electron gas in these samples were studied in detail by photoluminescence measurements and...

- Quasi-one-dimensional electron gas and its magnetic depopulation in a quantum wire prepared by.... Motohisa, J.; Sakaki, H. // Applied Physics Letters;9/27/1993, Vol. 63 Issue 13, p1786
Details the formation of a quasi-one-dimensional electron gas on an edge surface of an aluminum gallium arsenide/gallium arsenide multiple quantum well structure. Width of the well; Reduction of contamination; Indication of the angular dependence of the magnetoresistance and the magnetic...