Quantum cascade lasers

A quantum cascade laser is a very unique semiconductor laser that has been first demonstrated at Bell Laboratories in 1994.

Quantum cascade laser

QCL

 

Wikipedia has some nice information on QCLs: Quantum cascade laser


Download nextnano.QCL software

nextnano.QCL

  • Nonequilibrium Green's function (NEGF) method for calculating I-V curves and gain
  • NEGF quantum transport based on the code written by Thomas Grange (CNRS)
  • Documentation
  • Download nextnano.QCL including an evaluation license for a few months.

Download

nextnano leaflet on QCL simulations

Information on nextnano software for QCLs (pdf):

Download


Tutorials

If you are interested in further tutorials, please contact stefan.birner [at] nextnano.com.


Results

QCL

This figure shows the calculated electron density in a THz QCL.


Gain of a QCL

This figure shows the calculated gain of a THz QCL.


Features

Electron and current density of a QCL

nextnano software for QCLs

1) nextnano.QCL

  • Nonequilibrium Green's function (NEGF) method for calculating I-V curves and gain
  • NEGF quantum transport based on the code written by Thomas Grange (CNRS)
  • Documentation
  • Download nextnano.QCL including an evaluation license.

    Download

 

2) nextnano3 & nextnano++

  • self-consistent Schrödinger and Poisson equations
  • 8x8 k.p Schrödinger equation
  • strain
  • Documentation (nextnano3)
  • Documentation (nextnano++)

Publications

The following two papers give a very basic introduction to QCL modeling.


Poster