The quantum cascade laser (QCL) is becoming the leading laser source in the mid-infrared
(mid-IR) range, which contains two atmospheric transmission windows and many molecular …

By exploiting recent developments associated with parity–time (PT) symmetry in optics, we
here propose a new avenue in realizing single-mode large area laser amplifiers. This can …

Direct applications of high-power diode lasers (HPDLs) like hardening, heat conduction
welding of metals, and joining of polymers have already been demonstrated also in the …

The nonlinear phenomena accompanying the process of light generation in high-power
tapered semiconductor lasers are studied using a combination of simulation and …

High-brightness laser diode technology is progressing rapidly in response to competitive
and evolving markets. The large volume resonators required for high-power, high-brightness …

The slab-coupled optical waveguide laser (SCOWL) concept, recently proposed and
demonstrated, is extended to the AlGaAs-InGaAs-GaAs material system. Both 980-and 915 …

A new time-domain Fourier-Galerkin (TDFG) theory is developed to simulate the near-field,
far-field and spectral characteristics of surface-emitting photonic-crystal distributed-feedback …

We study the spectral properties of angled-grating high-power semiconductor lasers, also
known as/spl alpha/distributed feedback (DFB) lasers. We have derived a closedform …

Filament formation through self-focusing of light in semiconductor lasers leads to beam
quality degradation, as well as lifetime and facet degradation. In this paper, we rederive an …

Semiconductor laser arrays based on the third-order supersymmetric (SUSY) transformation
are proposed to increase the mode discrimination between fundamental supermode and …