Influence of Width of Left Well on Intersubband Transitions in AlxGa1-x N/GaN Double Quantum Wells
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Abstract
Influence of width of left well in AlxGa1-xN/GaN double quantum wells (DQWs) on absorption coefficients and wavelengths of the intersubband transitions (ISBTs) is investigated by solving the Schrödinger and Poisson equations self-consistently. When the width of left well is 1.79nm, three-energy-level DQWs are realized. The ISBT between the first odd and second odd order subbands (the 1odd-2odd ISBT) has a comparable absorption coefficient with the 1 odd-2even ISBT. Their wavelengths are located at 1.3 and 1.55μm, respectively. When the width of left well is 1.48nm, a four-energy-level DQWs is realized. The calculated results have a possible application to ultrafast two-colour optoelectronic devices operating within the optical communication wavelength range -
References
[1] Kishino K, Kikuchi A, Kanazawa H and Tachibana T 2002 Appl. Phys. Lett. 81 1234 [2] Gmachl C, Frolov S V, Ng H M, Chu S N G and Cho A Y 2001 Electron. Lett. 37 378 [3] Hamazaki J, Matsui S, Kunugita H, Ema K, Kanazawa H,Tachibana T, Kikuchi A and Kishino K 2004 Appl. Phys. Lett. 84 1102 [4] Suzuki N and Iizuka N 1999 Jpn. J. Appl. Phys. 36 3222 [5] Heber J D, Gmachl C, Ng H M and Cho A Y 2002 Appl.Phys. Lett. 81 1237 [6] Lei S Y, Shen B and Zhang G Y 2006 Chin. Phys. Lett. 23 1574 [7] Chi Y M and Shi J J 2007 Chin. Phys. Lett. 242376 [8] Gmachl C, Ng H M and Cho A Y 2001 Appl. Phys. Lett. 79 1590 [9] Liu H C, Song C Y, Wasilewski Z R, SpringThorpe A J, Cao JC, Dharma-Wardana C, Aers G C, Lockwood D J and Gupta J A 2003 Phys. Rev. Lett. 90 077402 [10] Yoshida H, Mozume T, Nishimura T and Wada O 1998 Electron. Lett. 34 913 [11] Lei S Y, Shen B and Zhang G Y 2006 Chin. Phys.Lett. 23 450 [12] Hofstetter D, Schad S S, Wu H, Schaff W J and Eastman L F2003 Appl. Phys. Lett. 83 572 [13] Iizuka N, Kaneko K, Suzuki N, Asano T, Noda S and Wada O2000 Appl. Phys. Lett. 77 648 [14] Lei S Y, Shen B and Zhang G Y 2008 Acta Phys. Sin. 57 2386 [15] Suzuki N and Iizuka N 1999 Pacific Rim Conf. onLasers and Electro-Optics (Seoul, Korea) p 310 [16] de Paiva R, Alves J L A, Nogueira R A, de Oliveira C,Alves H W L, Scolfaro L M R and Leite J R 2002 Mater. Sci.Eng. B 93 2 [17] Hedin L and Lundqvist B I 1971 J. Phys. C 42064 -
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