Numerical aspects of the development of Quantum Cascade Laser simulation software

2014 14th Biennial Baltic Electronic Conference (BEC) Pub Date : 2014-10-01 DOI:10.1109/BEC.2014.7320550

R. Reeder, A. Udal, E. Velmre, A. Valavanis, J. Cooper, A. Grier, P. Harrison

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Abstract

One of the most efficient device producing coherent high power radiation in terahertz range in electromagnetic spectrum is Quantum Cascade Laser (QCL). During over a decade of history, together with intensive development of terahertz quantum cascade lasers, respecting simulation software tools has been developed too. The process of development of simulation software is a sophisticated task, because many fields of science meet there - quantum electronics, computing technologies, software development etc. The progress in computing power have made simulation tools much more handy, as calculations of non-complex quantum well heterostructures can be run on a personal computer during a considerable time. Simulation of Quantum Cascade Lasers with complex structures can still be very time-consuming. In this paper few strategies on how to improve and optimize QWWAD software tools are analysed, implemented and corresponding results presented. Improvement of eigenvalue problem solution gave 20 times faster algorithm in solving Schrödinger equation. Other ideas did not give remarkable success.

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数值方面的量子级联激光仿真软件的开发

量子级联激光器(QCL)是电磁波谱中产生太赫兹相干高功率辐射效率最高的器件之一。在十多年的历史中，随着太赫兹量子级联激光器的深入发展，相关的仿真软件工具也得到了发展。仿真软件的开发过程是一项复杂的任务，因为许多科学领域都在那里相遇-量子电子学，计算技术，软件开发等。计算能力的进步使模拟工具更加方便，因为非复杂量子阱异质结构的计算可以在相当长的时间内在个人计算机上运行。具有复杂结构的量子级联激光器的模拟仍然非常耗时。本文对改进和优化QWWAD软件工具的几种策略进行了分析和实施，并给出了相应的结果。对特征值问题求解方法的改进，使求解Schrödinger方程的算法速度提高了20倍。其他的想法并没有取得显著的成功。

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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2014 14th Biennial Baltic Electronic Conference (BEC)

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