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 progress on laser feedback interferometry technology is reviewed. Laser feedback
interferometry is a demonstration of interferometry technology applying a laser reflected from …

Approaches that are, to our knowledge, novel, are proposed in this paper to improve the
accuracy performance of self-mixing interferometry (SMI) for displacement measurement …

Self-mixing interferometry (SMI) is a well-known non-destructive sensing technique that has
been widely applied in both laboratory and engineering applications. In a laser SMI sensing …

External optical feedback (EOF) has great impacts on the properties of lasers. It influences
the stable operation of lasers. However, various applications based on lasers with EOF have …

Feedback parameter (the C factor) is an important parameter for a semiconductor laser
operating in the regime of external optical feedback. Self-mixing interferometry (SMI) has …

This paper studies the behavior of optical feedback self-mixing interferometric (OFSMI)
systems, where the semiconductor lasers operate at a single mode (perturbed external …

Quasi-static interferometric signals in lasers under feedback arise from slowly varying
perturbations of the intracavity electric field resulting from the reinjection of a portion of the …

This paper presents a new method for measuring the linewidth enhancement factor (alpha
factor) by the relaxation oscillation (RO) frequency of a laser with external optical feedback …

In this study, a practical and straightforward method is presented for measuring the optical
feedback coefficient C and the linewidth enhancement factor α by means of the mode …