Far-infrared laser on quantum dots created by electric-field focusing

Lucjan Jacaka, Jurij Krasnyjb, 1, Dorota Jacakc and Liliana BujkiewiczCorresponding Author Contact Information, E-mail The Corresponding Author, a

a Institute of Physics, Wroclaw University of Technology, Wyb. Wyspianskiego 27, 50-370, Wroclaw, Poland
b Institute of Mathematics, University of Opole, Oleska 48, Opole, Poland
c Institute of Mathematics, Wroclaw University of Technology, Wyb. Wyspianskiego 27, 50-370, Wroclaw, Poland

Available online 14 June 2003.


Abstract

The new proposal of a far-infrared laser employing intraband transitions in the system of quantum dots is briefly described. The conditions for inversion of population for electrons in the quantum dot matrix created by an electric-field focusing in narrow GaAs/AlGaAs quantum well are discussed. The laser is planned to be pumped by periodically repeated rapid creation and destruction of the quantum dot matrix allowing for repeated filling of the dot levels with electrons from a quantum well. Some major results of the analysis of the kinetics of the electron–photon system are presented.

Author Keywords: Far-infrared laser; Quantum dots; Electric-field focusing


Corresponding Author Contact InformationCorresponding author.

1 On leave from Institute of Physics, Odessa University, Odessa, Ukraine.