Optically pumped rolled-up InGaAs/GaAs quantum dot microtube lasers

Optically injected quantum-dot lasers.

The response of an optically injected quantum-dot semiconductor laser (SL) is studied both experimentally and theoretically. In particular, the nature of the locking boundaries is investigated, revealing features more commonly associated with Class A lasers rather than conventional Class B SLs. Experimentally, two features stand out; the first is an absence of instabilities resulting from relax...

Population inversion in optically pumped asymmetric quantum well terahertz lasers

Gain Optimization in Optically Pumped AlGaAs Unipolar Quantum-Well Lasers

A method is described for the optimized design of quantum-well (QW) structures, in respect to maximizing the stimulated gain in optically pumped intersubband lasers. It relies on applying supersymmetric quantum mechanics (SUSYQM) to an initial Hamiltonian, in order to both map one bound state below the spectral range of the initial Hamiltonian, and to generate a parameter-controlled family of i...

Lorenz Chaos in Optically Pumped Lasers

Research over over the last eight years shows that lasers are among the most ver­ satile physical systems for studying the dynamic behaviour of nonlinear dissipa­ tive systems where motion never beco­ mes stable or periodic. The wide variety of laser classes, the ease with which several laser parameters can be changed and the rapidity of the internal relaxation proces­ ses have allowed the obse...

High-Radiance Optically Pumped Semiconductor Disk Lasers

We report on high-power operation of an optically pumped external-cavity semiconductor disk laser. 13.2W optical output power at 970 nm has been achieved in a double-pass pump configuration. The laser Bragg mirror was designed to provide not only high reflectivity for the laser wavelenth but also for the pumping beam. A proper layer structure which supports standing-wave patterns with a node ne...