Terahertz (THz) radiation (THz) shows great potential in agricultural products detection,
biomedical, and security inspection in recent years. Machine learning methods are widely …

Trace detection of explosives has been an ongoing challenge for decades and has become
one of several critical problems in defense science; public safety; and global counter …

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 …

To reduce the water footprint in agriculture, the recent push toward precision irrigation
management has initiated a sharp rise in photonics-based hydration sensing in plants in a …

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 …

The response of terahertz to the presence of water content makes it an ideal analytical tool
for hydration monitoring in agricultural applications. This study reports on the feasibility of …

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 …

The use of ultrasonic elastic waves is a well established technique for non-destructive
testing of materials and structures, in particular to exploit the interaction of waves with …

We report a coherent terahertz (THz) imaging system that utilises a quantum cascade laser
(QCL) operating in pulsed-mode as both the source and detector. The realisation of a short …

In this paper we report an improved method of coherent sensing through the use of a
generalized phase-stepping algorithm to extract magnitude and phase information from …