Nonlinear plasma wave excitation in cylindrical semiconductor waveguides

IF 4.6 2区 物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY
Amir Sohail , A. Rasheed , F. Areeb , B. Ramzan , M. Jamil , Shahid Idrees , Yuanyong Deng
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Abstract

This paper investigates the nonlinear excitation of plasma waves due to the interaction between an electron acoustic pump wave and a hole acoustic sideband wave in cylindrical semiconductor waveguides using nonlinear theory. The coupling between these waves leads to the generation of a beat acoustic wave, forming a three-wave interaction system. Quantum effects like Fermi degenerate pressure, exchange–correlation, and Bohm potentials, which play a critical role in modulating the wave dynamics, are incorporated. Using the Quantum Hydrodynamic Model, we derive and analyze the dispersion relations of these waves and the growth rates of beat waves under phase-matching conditions. Numerical results show that the nonlinearity emerges through ponderomotive forces, leading to significant amplification of the beat wave. The growth rate evolution is examined under the influence of temperature, electron density, and wave vector that reveals the enhanced wave coupling and energy transfer by lower temperatures, higher electron densities due to quantum effects, as well as shorter wavelengths and higher potential pump acoustic waves as optimizing conditions. These findings have potential applications in semiconductor device design, where controlled nonlinear wave interactions are essential for optimizing performance.
圆柱形半导体波导中的非线性等离子体波激发
本文应用非线性理论研究了圆柱形半导体波导中电子声泵浦波与空穴声边带波相互作用所引起的等离子体波的非线性激发。这些波之间的耦合导致产生一个节拍声波,形成一个三波相互作用系统。量子效应,如费米简并压力,交换相关和玻姆势,它们在调制波动力学中起着关键作用,被纳入。利用量子流体力学模型,推导并分析了这些波的色散关系以及相位匹配条件下拍波的增长率。数值结果表明,非线性是通过有质动势产生的,导致热波的显著放大。在温度、电子密度和波矢量的影响下,研究了生长速率的演变,揭示了较低的温度、量子效应导致的较高的电子密度以及波长较短、势较高的泵浦声波作为优化条件,增强了波耦合和能量传递。这些发现在半导体器件设计中有潜在的应用,其中控制非线性波相互作用对于优化性能至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Chinese Journal of Physics
Chinese Journal of Physics 物理-物理:综合
CiteScore
8.50
自引率
10.00%
发文量
361
审稿时长
44 days
期刊介绍: The Chinese Journal of Physics publishes important advances in various branches in physics, including statistical and biophysical physics, condensed matter physics, atomic/molecular physics, optics, particle physics and nuclear physics. The editors welcome manuscripts on: -General Physics: Statistical and Quantum Mechanics, etc.- Gravitation and Astrophysics- Elementary Particles and Fields- Nuclear Physics- Atomic, Molecular, and Optical Physics- Quantum Information and Quantum Computation- Fluid Dynamics, Nonlinear Dynamics, Chaos, and Complex Networks- Plasma and Beam Physics- Condensed Matter: Structure, etc.- Condensed Matter: Electronic Properties, etc.- Polymer, Soft Matter, Biological, and Interdisciplinary Physics. CJP publishes regular research papers, feature articles and review papers.
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