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 …

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 …

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 …

We demonstrate that electrically pumped random laser resonators, operating at terahertz
(THz) frequencies, and comprising a quantum cascade laser heterostructure, can operate as …

The typical modal characteristics arising during laser feedback interferometry (LFI) in multi-
mode terahertz (THz) quantum cascade lasers (QCLs) are investigated in this work. To this …

光谱合成技术利用色散元件或双色元件, 使多路不同波长的激光在近场和远场同时实现空间重叠
, 合成至单一孔径输出的激光, 是实现高功率, 高光束质量激光输出的技术途径之一 …

This paper, while focusing on post-perturbed phase processing of optical feedback based
self-mixing laser displacement sensor, rigorously derives a general strategy to achieve the …

Using a self-mixing laser interferometric sensor, the aim of this paper is to propose two new
and distinct Fourier transform based methods for estimation of optical coupling factor and …

We design a simultaneous measurement of the thickness and speed to monitor mechanical
cylindrical parts during external grinding based on a laser self-mixing interference in a …

The far-infrared (IR) frequency range, or more specifically the terahertz (THz) frequency
range, of the electromagnetic spectrum has been comparatively underutilised in the field of …