Abstract
This paper reviews the dynamic effect of thin-slice solid-state lasers subjected to frequency-shifted optical feedback, which led to the discovery of the self-mixing modulation effect, and its applications to quantum-noise-limited versatile laser metrology systems with extreme optical sensitivity.
Highlights
Laser feedback interferometry (LFI), known as laser self-mixing interferometry (LSMI), is an interferometric sensing technique based on the optical mixing of the field in the laser cavity with the weak field back-reflected or back-scattered by a remote target
Let me show the basic scheme of thin-slice solid-state lasers with laser-diode pumping commonly employed in self-mixing laser metrology systems, which will be described in this review article
A 5 at.% Yb-doped 2-mm-thick Yb:YAG ceramic sample consisting of randomly distributed single-crystalline grains, whose average size was about 3.20 mm, was used and the end surfaces of this sample were coated with mirrors, M1 (99.8% reflectance at 1,049 nm and 95% transmittance at 970 nm) and M2 (98% reflectance at 1,049 nm)
Summary
Laser feedback interferometry (LFI), known as laser self-mixing interferometry (LSMI), is an interferometric sensing technique based on the optical mixing of the field in the laser cavity with the weak field back-reflected or back-scattered by a remote target. The historical phases leading to the development of laser feedback metrology are addressed
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