Year
2016
Degree Name
Doctor of Philosophy
Department
School of Electrical, Computer and Telecommunications
Advisor(s)
Professor Jiangtao Xi
Recommended Citation
Fan, Yuanlong, Dynamic Stability Analysis for a Self Mixing Interferometry, Doctor of Philosophy thesis, School of Electrical, Computer and Telecommunications, University of Wollongong, 2016. https://ro.uow.edu.au/theses/4615
Abstract
In recent years, as an emerging and promising non-contact sensing technique, Self Mixing Interferomerty (SMI) has attracted much attention of researchers. The SMI is based on the self-mixing effect that occurs when a small fraction of laser light emitted by the semiconductor laser (SL) is reflected by an external target and re-enters the SL cavity. Therefore, the core components of an SMI consist of an SL, a micro-lens and a target. The target forms an external cavity for the laser, and when it moves along the light beam, a modulation in the emitted laser power can be observed. This modulated power is referred to as an SMI signal which carries the information of the motion of the target as well as the SL itself. Compared to other traditional interferometric schemes, e.g., Michelson or Mach-Zender, SMI has the advantages of a compact set-up, high sensitivity and low cost.
Unless otherwise indicated, the views expressed in this thesis are those of the author and do not necessarily represent the views of the University of Wollongong.