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This website describes the nextnano.QCL software, an awesome NEGF quantum transport code written by Thomas Grange. The nextnano.QCL software has been developed to simulate periodic structures like superlattices, quantum cascade lasers (QCLs) and resonant tunneling diodes (RTDs), as well as nanowire QCLs.
The software calculates current-voltage characteristics and gain.
This software is based on a quantum transport method that follows the nonequilibrium Green's function (NEGF) framework. The code can be executed using the nextnanomat software.
Please download it from here. Additionally, it is strongly recommend to contact support@nextnano.com and inform us that you are interested in this tool. We can then assist you and provide new updates to you.
Open the nextnanomat GUI, open a nextnano.QCL input file and press the Run
button.
nextnano.QCL.exe <input file name> <output folder name> <material database name>
Example:
nextnano.QCL.exe "..\nextnano.QCL sample files\MidIR_QCL_YuSlivkenRazeghi_SST2010.xml" "..\Output" .\Material_Database.xml
<nodisp> <!– Comment: One could use colors here, e.g. a color for each argument to make the documentation more readable. –> </nodisp>
Tutorial - GaAs/AlGaAs THz QCL
Terahertz quantum cascade lasers operating up to ~ 200 K with optimized oscillator strength and improved injection tunneling
S. Fathololoumi, E. Dupont, C.W.I. Chan, Z.R. Wasilewski, S.R. Laframboise, D. Ban, A. Mátyás, C. Jirauschek, Q. Hu, H. C. Liu
Optics Express 20, 3866 (2012)
Tutorial - InGaAs/InAlAs Mid-IR QCL
Injector doping level-dependent continous-wave operation of InP-based QCLs at λ = 7.3 µm above room temperature
J. S. Yu, S. Slivken, M. Razeghi
Semiconductor Science and Technology 25, 125015 (2010)
Further tutorials can be found here: Tutorials
The NEGF method for QCLs is decribed in the following publications where the nextnano.QCL code was used.
The nextnano.QCL software has been developed by Thomas Grange. It is written in C#. For publications of Thomas Grange, see his profile on Google Scholar.
The nextnano.QCL software is distributed by the nextnano GmbH.
For questions or feedback about the software, please contact support@nextnano.com.