Nonlinear optical absorption and optical rectification in near-surface double quantum wells: combined effects of electric, magnetic fields and hydrostatic pressure

被引:7
作者
Lopez, S. Y. [2 ]
Mora-Ramos, M. E. [1 ]
Duque, C. A. [2 ]
机构
[1] Univ Autonoma Estado Morelos, Fac Ciencias, Cuernavaca 62209, Morelos, Mexico
[2] Univ Antioquia, Inst Fis, Medellin 1226, Colombia
关键词
Non-linear optical absorption; Non-linear optical rectification; GaAs-based near surface double quantum wells; Electric and magnetic fields; Hydrostatic pressure; SUSCEPTIBILITY; SUPERLATTICES; GENERATION; IMPURITY; MODEL;
D O I
10.1007/s11082-012-9544-5
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The theoretical study of the combined effects of electric and magnetic fields and hydrostatic pressure on the nonlinear optical absorption and rectification is presented for electrons confined within an asymmetrical GaAs-Ga1-x Alx As double quantum well. The effective mass, parabolic band, and envelope function approaches are used as tools for the investigation. The electric field is taken to be oriented along the growth direction of the heterostructure and the magnetic field is applied parallel to the interfaces of the quantum wells. The pressure-induced mixing between the two lowest conduction bands is considered both in the low and high pressure regimes. According to the results obtained it can be concluded that the nonlinear optical absorption and rectification coefficients depend in a non-trivial way on some internal and external parameters such as the size of the quantum wells, the direction of applied electric field, the magnitude of hydrostatic pressure, the stoichiometry of the wells and barriers, and the intensity of the applied magnetic field.
引用
收藏
页码:355 / 372
页数:18
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