Quantum effects on modulational amplification in ion-implanted semiconductor magnetoplasmas

IF 1.9 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Pramana Pub Date : 2023-03-28 DOI:10.1007/s12043-023-02525-0

Pravesh, Sunita Dahiya, Devender Singh, Manjeet Singh

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引用次数: 1

Abstract

Using a quantum hydrodynamic model, quantum effects (via Bohm potential) on modulational amplification in ion-implanted semiconductor magnetoplasmas are investigated. Expressions are obtained for the threshold pump amplitude and the growth rate of modulated beam for both the electrons and implanted colloids. Numerical analysis is performed for n-InSb/CO₂ laser system. The dependence of the threshold pump amplitude and the growth rate of modulated beam for electrons on wave number, applied magnetic field (via electron cyclotron frequency) and electron concentration (via electron-plasma frequency) and the dependence of the threshold pump amplitude and the growth rate of modulated beam for implanted colloids on wave number and colloid concentration (via colloid-plasma frequency) are explored. The lowering in threshold pump amplitude and enhancement of the growth rate of modulated beam for both the electrons and implanted colloids are observed by incorporating the quantum effects. The analysis provides detailed information of quantum effects on modulational amplification in ion-implanted semiconductor magnetoplasmas composed of electrons and negatively charged implanted colloids and establishes the technological potentiality of chosen samples as the hosts for the fabrication of efficient optical modulators.

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离子注入半导体磁等离子体调制放大的量子效应

利用量子流体力学模型，研究了离子注入半导体磁等离子体中调制放大的量子效应(通过玻姆势)。得到了电子和注入胶体的阈值泵浦振幅和调制光束生长速率的表达式。对n-InSb/CO2激光系统进行了数值分析。探讨了阈值泵浦幅值和电子调制束生长速率与波数、外加磁场(通过电子回旋频率)和电子浓度(通过电子-等离子体频率)的关系，以及植入胶体的阈值泵浦幅值和调制束生长速率与波数和胶体浓度(通过胶体-等离子体频率)的关系。结合量子效应，观察到电子和注入胶体的阈值泵浦幅值降低，调制光束的生长速率增强。该分析提供了由电子和带负电荷的植入胶体组成的离子注入半导体磁等离子体中调制放大的量子效应的详细信息，并确定了所选样品作为制造高效光调制器的宿主的技术潜力。

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来源期刊

Pramana 物理-物理：综合

CiteScore

3.60

自引率

7.10%

发文量

206

审稿时长

3 months

期刊介绍： Pramana - Journal of Physics is a monthly research journal in English published by the Indian Academy of Sciences in collaboration with Indian National Science Academy and Indian Physics Association. The journal publishes refereed papers covering current research in Physics, both original contributions - research papers, brief reports or rapid communications - and invited reviews. Pramana also publishes special issues devoted to advances in specific areas of Physics and proceedings of select high quality conferences.