Power scaling in broad area quantum cascade lasers results in the operation of high order
transverse modes with a far-field profile consisting of two lobes propagating at large angles …

High-power quantum cascade lasers (QCLs) have a wide application prospect. In this paper,
a high-power high-beam-quality device with a large ridge width is demonstrated. The effect …

The focused ion beam (FIB) technique was used to fabricate a nanothermocouple (with a 90
nm wide nanojunction) based on a metal–semiconductor (Pt–Si) structure, which showed a …

The present paper provides a theoretical and experimental analysis of mid-infrared (4.5 µm)
quantum cascade laser Fabry-Perrot waveguides with various sidewall geometries …

In this paper we present calculated mode distributions in double-trench mesa waveguide of
a quantum cascade laser (QCL) and far-field distributions of the QCL beam—both calculated …

We develop a method for analyzing the lateral modes of broad-ridge quantum cascade
lasers (QCLs) that incorporate an intracavity lateral constriction. The calculations provide …

The mid-infrared, covering the wavelength range 3-30 µm (10-100 THz) is of particular
importance for chemical species detection, since many atmospheric trace gases and liquids …