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首页> 外文期刊>Optical and quantum electronics >Nonlinear optical absorption and optical rectification in near-surface double quantum wells: combined effects of electric, magnetic fields and hydrostatic pressure
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Nonlinear optical absorption and optical rectification in near-surface double quantum wells: combined effects of electric, magnetic fields and hydrostatic pressure

机译：近地表双量子阱中的非线性光学吸收和光学整流：电场，磁场和流体静压力的综合作用

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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-Gai-jALt 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.
机译：针对非对称GaAs-Gai-jALt As双量子阱中的电子，提出了电场和磁场以及静水压力对非线性光学吸收和整流的综合影响的理论研究。有效质量，抛物线带和包络函数方法被用作研究的工具。认为电场沿着异质结构的生长方向取向，并且磁场平行于量子阱的界面施加。在低压和高压状态下都考虑了两个最低导带之间的压力诱导混合。根据获得的结果，可以得出结论，非线性光学吸收和整流系数非平凡地取决于一些内部和外部参数，例如量子阱的大小，施加电场的方向，静水压的大小压力，阱和势垒的化学计量以及所施加的磁场强度。

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