A PC-INTERFACED, COMPACT LASER-DIODE FEEDBACK INTERFEROMETER FOR DISPLACEMENT MEASUREMENTS

Authors
DONATI S FALZONI L MERLO S
Citation
S. Donati et al., A PC-INTERFACED, COMPACT LASER-DIODE FEEDBACK INTERFEROMETER FOR DISPLACEMENT MEASUREMENTS, IEEE transactions on instrumentation and measurement, 45(6), 1996, pp. 942-947
Citations number
15
Categorie Soggetti
Engineering, Eletrical & Electronic","Instument & Instrumentation
Journal title
IEEE transactions on instrumentation and measurement → ACNP
ISSN journal
00189456
Volume
45
Issue
6
Year of publication
1996
Pages
942 - 947
Database
ISI
SICI code
0018-9456(1996)45:6<942:APCLFI>2.0.ZU;2-S
Abstract
We describe a laser-diode feedback interferometer for displacement mea surements with directional discrimination and resolution better than 1 0(-6) m. This new, compact instrument consists of a small optical head and a signal processing board, which is interfaced to a personal comp uter. The prototype developed has a dynamic range of 2 m and an accura cy of about 5 mu m/m, using a corner cube as a remote reflector. Thank s to PC interfacing, the displacement is directly available in metric units and errors due to temperature fluctuations can be corrected with software signal processing.