Russell Kliese

TL;DR: Self-mixing imaging offers high sensitivity, a potentially fast response, and a simple, compact optical design, and it is shown that it can be used to obtain high-resolution reflection images of exemplar structures.

TL;DR: In this article, a self-mixing sensing technique for terahertz (THz) quantum cascade laser (QCL) was developed for both generation and interferometric sensing of radiation, eliminating the need for a separate detector.

TL;DR: This work demonstrates a parallel readout self-mixing flow velocity sensing system based on a monolithic Vertical-Cavity Surface-Emitting Laser array that enables high-resolution full-field imaging systems employing electronic scanning with faster acquisition rates than mechanical scanning systems.

TL;DR: A systematic numerical approach for the analysis of self-mixing sensors using the steady-state solution to the Lang and Kobayashi model and examples are given to show how this method can be used to synthesize self- Mixing signals for arbitrary feedback levels and for displacement, distance, and velocity measurement.

TL;DR: In this paper, the authors used self-mixing (SM) interferometry for phase-sensitive THz-SM sensing without any external detector, and demonstrated velocimetry of an oscillating reflector by monitoring SM-induced changes in the QCL drive voltage.