Terahertz (THz= 10 12 Hz) radiation has attracted wide attention for its unprecedented
sensing ability and its noninvasive and nonionizing properties. Tremendous strides in THz …

Terahertz (THz) technology has experienced rapid development in the past two decades.
Growing numbers of interdisciplinary applications are emerging, including materials …

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 …

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 …

In the past few decades, the applications of terahertz (THz) spectroscopy and imaging
technology have seen significant developments in the fields of biology, medical diagnosis …

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 …

The recent revolutions in robotics, artificial intelligence, Internet of Things (IoT), wearable
devices, machine learning, and big data analytics have revealed promising possibilities in …

We have investigated the feasibility of THz time-domain reflectometry for the discrimination
of human early gastric cancer (EGC) from the normal gastric region. Eight fresh EGC tissues …

Early detection of skin pathologies with current clinical diagnostic tools is challenging,
particularly when there are no visible colour changes or morphological cues present on the …

In this article, we revisit the concept of optical feedback regimes in diode lasers and explore
each regime experimentally from a somewhat unconventional point of view by relating the …