Terahertz plasmon intersubband laser based on an electron-enriched GaAs/AlGaAs heterojunction

IF 2 3区物理与天体物理 Q3 OPTICS

Applied Physics B Pub Date : 2025-06-30 DOI:10.1007/s00340-025-08511-1

A. A. Afonenko, D. V. Ushakov, A. A. Dubinov

引用次数: 0

Abstract

The structure of a terahertz (THz) laser with a plasmonic waveguide based on an electron-rich GaAs/AlGaAs heterojunction is proposed. Modeling of electromagnetic modes was carried out taking into account the spatial dispersion of permittivity. Based on self-consistent calculations of electron states, taking into account the influence of the spatial charge distribution on the conduction band profile, it is shown that the current–voltage characteristic of the laser has a hysteresis type. The generation of the plasmonic mode occurs in the hysteresis region at frequencies of 1.8–4.1 THz. The gain of the plasmonic mode can reach 10⁵ cm^–1 at a temperature of 77 K.

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基于富电子GaAs/AlGaAs异质结的太赫兹等离子体子带间激光器

提出了一种基于富电子GaAs/AlGaAs异质结的太赫兹等离子波导激光器结构。考虑介电常数的空间色散，对电磁模进行了建模。基于电子态的自一致计算，考虑到空间电荷分布对导带轮廓的影响，表明激光器的电流-电压特性具有迟滞型。等离子体模式的产生发生在1.8-4.1太赫兹的迟滞区。在77 K的温度下，等离子体模式的增益可达105 cm-1。

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

Applied Physics B 物理-光学

CiteScore

4.00

自引率

4.80%

发文量

202

审稿时长

3.0 months

期刊介绍： Features publication of experimental and theoretical investigations in applied physics Offers invited reviews in addition to regular papers Coverage includes laser physics, linear and nonlinear optics, ultrafast phenomena, photonic devices, optical and laser materials, quantum optics, laser spectroscopy of atoms, molecules and clusters, and more 94% of authors who answered a survey reported that they would definitely publish or probably publish in the journal again Publishing essential research results in two of the most important areas of applied physics, both Applied Physics sections figure among the top most cited journals in this field. In addition to regular papers Applied Physics B: Lasers and Optics features invited reviews. Fields of topical interest are covered by feature issues. The journal also includes a rapid communication section for the speedy publication of important and particularly interesting results.