This tutorial presents a guided tour of laser feedback interferometry, from its origin and early
development through its implementation to a slew of sensing applications, including …

The terahertz (THz) frequency quantum cascade laser (QCL) is a compact source of THz
radiation offering high power, high spectral purity and moderate tunability. As such, these …

In this chapter, we discuss the oscillation conditions for semiconductor lasers and, then,
derive the rate equations, which are the starting points of the study of chaotic dynamics in …

Quantum cascade lasers (QCLs) are high-power sources of coherent radiation in the
midinfrared and terahertz (THz) bands. Laser feedback interferometry (LFI) is one of the …

We study the time dependence of the optical power emitted by terahertz and mid-IR
quantum cascade lasers in presence of optical reinjection and demonstrate unprecedented …

We present a directly generated on-chip dual-comb source at terahertz (THz) frequencies.
The multi-heterodyne beating signal of two free-running THz quantum cascade laser …

Terahertz (THz) quantum cascade lasers (QCLs) are semiconductor-based electrically
pumped laser sources that are based on electron transitions between the subbands in the …

The terahertz (THz) frequency quantum cascade laser (QCL) is a compact source of high-
power radiation with a narrow intrinsic linewidth. As such, THz QCLs are extremely …

We present a numerical study of the active harmonic mode locking (HML) of quantum
cascade lasers (QCLs) in the terahertz (THz) spectral range. This is a recently …

Self-mixing laser sensors show promise for a wide range of sensing applications, including
displacement, velocimetry, and fluid flow measurements. Several techniques have been …