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qcl:the_nextnano.qcl_software [2019/05/06 13:48]
stefan.birner [Where can I find some background on the implemented physics?]
qcl:the_nextnano.qcl_software [2020/07/03 13:53]
thomas.grange
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-====== The nextnano.QCL software for Quantum Cascade Lasers ====== +Moved to [[https://​nextnano-docu.northeurope.cloudapp.azure.com/​dokuwiki/​doku.php?​id=negf:the_nextnano.negf_software&​do=edit&rev=0]]
-  * [[https://www.nextnano.com/​customer/​download_code_QCL.php|Download nextnano.QCL software]] +
-  * [[https://​www.nextnano.com/​dokuwiki/​doku.php?​id=nnm:license_activation|License activation]] +
- +
-{{ :​qcl:​nextnanoqcl_electron_density.jpg?​300|}} +
- +
-This website describes the nextnano.QCL software, +
-a **NEGF quantum transport code** written by Thomas Grange. +
-The nextnano.QCL software has been developed to simulate electron dynamics in heterostructures like superlattices and **quantum cascade lasers** (QCLs). It can also be used to simulate absorption spectra in quantum wells (QWs) and transport in **resonant tunneling diodes** (RTDs). +
- +
-The software calculates current-voltage characteristics and gain/​absorption spectra. +
- +
-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 [[http://​www.nextnano.com/​products/​nextnanomat.php|nextnanomat]] software. +
- +
-==== Which scattering mechanisms are included? ==== +
-  * Longitudinal polar-optical phonon scattering (polar LO phonon scattering) +
-  * Acoustic phonon scattering +
-  * Charged impurity scattering +
-  * Interface roughness scattering +
-  * Alloy scattering +
-  * Electron-electron scattering +
- +
-==== How do I obtain the nextnano.QCL code? ==== +
-Please [[http://​www.nextnano.com/​customer/​download_code_QCL.php|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. +
- +
-==== How do I execute nextnano.QCL?​ ==== +
-Open the nextnanomat GUI, open a nextnano.QCL input file and press the ''​Run''​ button. +
- +
-==== How do I execute nextnano.QCL from the command line? (not recommended) ==== +
-''​nextnano.QCL.exe <input file name> <output folder name> <​material database name> <License file name>''​ +
- +
-Example:​\\ +
-''​nextnano.QCL.exe %%"​%%..\nextnano.QCL sample files\MidIR_QCL_YuSlivkenRazeghi_SST2010.xml%%"​%% %%"​%%..\Output%%"​%% %%"​%%..\Material_Database.xml%%"​%% ​  ​%%"​%%..\License_nnQCL.lic%%"​%% ''​ +
- +
-==== Are there any tutorial input files available? ==== +
- +
-  * [[qcl:​tutorials:​thz_qcl_-_fathololoumi|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) +
- +
-  * [[qcl:​tutorials:​mid-ir_qcl_-_yu_slivken_razeghi|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: [[qcl:​tutorials|Tutorials]] +
- +
-==== Where can I find some background on the implemented physics? ==== +
-The NEGF method for QCLs is decribed in the following publications where the nextnano.QCL code was used. +
-  * [[http://​dx.doi.org/​10.1103/​PhysRevB.92.241306|Contrasting influence of charged impurities on transport and gain in terahertz quantum cascade lasers]]\\ T. Grange\\ Physical Review B 92, 241306(R) (2015) +
- +
-  * [[http://​dx.doi.org/​10.1063/​1.4897543|Nanowire terahertz quantum cascade lasers]]\\ T. Grange\\ Applied Physics Letters 105, 141105 (2014) +
- +
-  * [[http://​dx.doi.org/​10.1103/​PhysRevB.89.165310|Electron transport in quantum wire superlattices]]\\ T. Grange\\ Physical Review B 89, 165310 (2014) +
- +
-  * [[http://​dx.doi.org/​10.1103/​PhysRevB.89.165310|Room temperature operation of n-type Ge/SiGe terahertz quantum cascade lasers predicted by non-equilibrium Green'​s functions]]\\ T. Grange et al.\\ Applied Physics Letters 114, 111102 (2019) [[https://​arxiv.org/​abs/​1811.12879|arXiv]] +
- +
-A good introduction is also the tutorial talk [[http://​iqclsw2018.lpa.ens.fr/​IMG/​pdf/​tutorial_iqclsw_2018_grange.pdf|Modeling electron transport in quantum cascade lasers]] given by Thomas Grange at the International Quantum Cascade Laser School and Workshop (Cassis/​France,​ 2018). +
-==== Copyright information ==== +
-{{ :​qcl:​thomas_grange_grey.jpg?​100|}} +
-The nextnano.QCL software has been developed by Thomas Grange. It is written in C#. +
-For publications of Thomas Grange, see [[https://​scholar.google.com/​citations?​user=xYCDFt4AAAAJ&hl=|his profile on Google Scholar]]+
- +
-The nextnano.QCL software is distributed by the [[http://​www.nextnano.com|nextnano GmbH]]. +
- +
-For questions or feedback about the software, please contact <​support@nextnano.com>​. +
qcl/the_nextnano.qcl_software.txt · Last modified: 2020/07/03 13:56 by thomas.grange