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Proceedings Paper

CALAS: Carpathian laser strainmeter: a project and preliminary results
Author(s): F. Garoi; D. Apostol; V. Damian; P. C. Logofătu; B. F. Ioniţă; J. Lazar; G. Molesini; T. Papadopoulos; C. Ionescu; Andreea Ţugui
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Paper Abstract

A laser strainmeter for in-situ monitoring of an important actively seismic area of Europe, namely Vrancea region in Romania is proposed. Six groups from four different countries (Romania, Czech Republic, Italy and Greece) with various areas of expertise (e.g. geophysics, lasers, optics, interferometry, and mechanics) are involved in order to sustain the complexity of the project. This paper presents some preliminary laboratory experiments related to measuring relative displacements with a stable interferometer. Displacements of the order of tens to hundreds of nanometers (80 to 285 nm) were measured with uncertainty of ±1 nm. A computer algorithm was used to process the interferograms.

Paper Details

Date Published: 5 June 2008
PDF: 8 pages
Proc. SPIE 7022, Advanced Laser Technologies 2007, 702218 (5 June 2008); doi: 10.1117/12.804106
Show Author Affiliations
F. Garoi, National Institute for Laser, Plasma and Radiation Physics (Romania)
D. Apostol, National Institute for Laser, Plasma and Radiation Physics (Romania)
V. Damian, National Institute for Laser, Plasma and Radiation Physics (Romania)
P. C. Logofătu, National Institute for Laser, Plasma and Radiation Physics (Romania)
B. F. Ioniţă, National Institute for Laser, Plasma and Radiation Physics (Romania)
J. Lazar, Institute of Scientific Instruments (Czech Republic)
G. Molesini, National Institute of Applied Optics (Italy)
T. Papadopoulos, National and Kapodistrian Univ. of Athens (Greece)
C. Ionescu, National Institute for Earth Physics (Romania)
Andreea Ţugui, National Institute for Earth Physics (Romania)


Published in SPIE Proceedings Vol. 7022:
Advanced Laser Technologies 2007

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