Open AccessSELF-MIXING LASER VIBROMETER WITHE RESOLUTION IN THE MICRO AND NANO METERS SCALE
Author(s) -
L. E. Filgueira,
Ch. Schmiegelow
Publication year - 2021
Publication title -
anales/anales afa
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.14
H-Index - 2
eISSN - 1850-1168
pISSN - 0327-358X
DOI - 10.31527/analesafa.2021.32.1.15
Subject(s) - laser doppler vibrometer , laser , interferometry , optics , calibration , materials science , vibration , diode , laser scanning vibrometry , nano , scale (ratio) , nanoscopic scale , acoustics , distributed feedback laser , physics , optoelectronics , nanotechnology , composite material , quantum mechanics
We present the development of an interferometer capable of making contactless measurements of vibrations. The resultsshow the we achieve micro- and/or nano-metric measurements without the stabilization of the laser. While there aremultiple techniques to achieve this objective, in this case we use a method whose main virtue is the low componentcount and the self-alignment capacity. The method is based on the optical feedback effect in a laser diode which relieson the use of an internal reference for calibration.