温度对金字塔量子点带间和带内光学跃迁的影响

IF 2.9 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

The European Physical Journal Plus Pub Date : 2025-09-23 DOI:10.1140/epjp/s13360-025-06835-7

K. S. Khachatryan, M. A. Mkrtchyan, D. B. Hayrapetyan, S. Baskoutas, C. S. Garoufalis, C. A. Duque, H. A. Sarkisyan

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引用次数: 0

摘要

本文研究了金字塔型量子点中带内和带间的光学跃迁。在绝热近似的框架内，对问题的能谱和波函数进行了解析计算。在此基础上，考虑带隙的温度依赖性和吸收谱线的光谱展宽，研究了带间吸收。然后，计算了矩阵密度法下的线性和非线性带内吸收。研究了系统中二阶（三能级系统）和三阶（四能级系统）次谐波的温度和几何依赖关系。

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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Temperature influence on interband and intraband optical transitions in pyramidal quantum dot

In this paper, a study of intraband and interband optical transitions in a pyramidal QD is presented. The energy spectrum and wave functions of the problem are calculated analytically within the framework of the adiabatic approximation. Based on the obtained results, the interband absorption is investigated, taking into account the temperature dependence of the band gap and the spectral broadening of the absorption lines. Then, the linear and nonlinear intraband absorption within the matrix density approach is calculated. The temperature and geometric dependencies of the generations of the second (for a three-level system) and third (for a four-level system) harmonics in the system under study are studied.

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来源期刊

The European Physical Journal Plus PHYSICS, MULTIDISCIPLINARY-

CiteScore

5.40

自引率

8.80%

发文量

1150

审稿时长

4-8 weeks

期刊介绍： The aims of this peer-reviewed online journal are to distribute and archive all relevant material required to document, assess, validate and reconstruct in detail the body of knowledge in the physical and related sciences. The scope of EPJ Plus encompasses a broad landscape of fields and disciplines in the physical and related sciences - such as covered by the topical EPJ journals and with the explicit addition of geophysics, astrophysics, general relativity and cosmology, mathematical and quantum physics, classical and fluid mechanics, accelerator and medical physics, as well as physics techniques applied to any other topics, including energy, environment and cultural heritage.