Dual‐comb sources with equally spaced and low phase noise frequency lines are of great
importance for high resolution spectroscopy and metrology. In the terahertz frequency range …

The fast detection of terahertz radiation is of great importance for various applications such
as fast imaging, high speed communications, and spectroscopy. Most commercial products …

Optical feedback exists in most laser configurations and strongly affects laser performances
depending on the feedback strength, length, and phase. In this paper, we investigate the …

The authors present an experimental investigation of radio frequency modulation on pulsed
terahertz quantum cascade lasers (QCLs) emitting around 4.3 THz. The QCL chip used in …

Frequency combs based on quantum cascade lasers (QCLs) are finding promising
applications in high-speed broadband spectroscopy in the terahertz regime, where many …

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 …

High-power and broadband dual-comb sources in the terahertz frequency regime are much
in demand for fast and high-resolution spectroscopies. The terahertz quantum cascade laser …

As semiconductor devices, the terahertz quantum-cascade laser is a coherent source based
on intersubband transitions of unipolar carriers while the terahertz quantum-well …

Frequency combs show various application potentials in high precision spectroscopy,
imaging, communications, and so on. In the terahertz (THz) region, semiconductor-based …

Stable operation is one of the most important requirements for a laser source for high-
precision applications. Many efforts have been made to improve the stability of lasers by …