We systematically investigate the laser ridge width effect on comb operation of single
plasmon waveguide quantum cascade lasers emitting around 4.2 THz. The total group …

Optical frequency combs are perfectly periodic waveforms of light, whose optical spectrum
consists of a large number of equidistant modes. The mode spacing lies in the radio …

Faraday rotation and Zeeman splitting describe the rotation of the polarization plane and the
attenuation of polarized light during an interaction between light and matter while a …

The use of hydrogen combustion based scramjets for propulsion is one promising idea to
drive hypersonic passenger transport. Even though these propulsion systems prevent CO 2 …

Optical frequency combs are perfectly periodic waveforms of light, whose optical spectrum
consists of a large number of equidistant modes. The mode spacing lies in the radio …

Ever since the invention of quantum cascade laser (QCL), the performance and the flexibility
in design has made it a desirable source for a wide range of applications, such as trace …

The infrared region is the cradle of many vital applications in spectroscopy, medicine and
communication. In the Mid-Infrared (MIR) region, innovations and significant improvements …