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


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

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)
  • nextnano.QCL
  • Download nextnano.QCL including an evaluation license until 2016-12-31.

    Download

 

nextnano3 & nextnano++

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

Publications

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


Poster