CALAS: Carpathian laser strainmeter: a project and preliminary results

F. Garoi; D. Apostol; V. Damian; P. C. Logofătu; B. F. Ioniţă; J. Lazar; G. Molesini; T. Papadopoulos; C. Ionescu; Andreea Ţugui

doi:10.1117/12.804106

5 June 2008 CALAS: Carpathian laser strainmeter: a project and preliminary results

F. Garoi, D. Apostol, V. Damian, P. C. Logofătu, B. F. Ioniţă, J. Lazar, G. Molesini, T. Papadopoulos, C. Ionescu, Andreea Ţugui

Author Affiliations +

Proceedings Volume 7022, Advanced Laser Technologies 2007; 702218 (2008) https://doi.org/10.1117/12.804106
Event: Advanced Laser Technologies 2007, 2007, Levi, Finland

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.

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F. Garoi, D. Apostol, V. Damian, P. C. Logofătu, B. F. Ioniţă, J. Lazar, G. Molesini, T. Papadopoulos, C. Ionescu, and Andreea Ţugui "CALAS: Carpathian laser strainmeter: a project and preliminary results", Proc. SPIE 7022, Advanced Laser Technologies 2007, 702218 (5 June 2008); https://doi.org/10.1117/12.804106

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