I. Moldovan

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The aim of Polychromatic Laser Guide Star (PLGS) is to ensure 100 % sky coverage for near-diffraction astronomical observations using Adaptive Optics. The technique proposed by Foy et al. used a double resonance laser excitation of the mesospheric sodium layer with two dependent lasers at 589 nm and 569 nm. This process produced a polychromatic Tip-Tilt(More)
In this paper, we present the simple and high efficient intra-cavity preamplifier of the laser channel we are developing. In usual laser channel the preamplifier medium is placed inside an additional extra-cavity. Here we have experimented a new configuration. The preamplifier is simply an intra-cavity high quality dye cell at Brewster angle. Our new(More)
This paper describes the modalities of detection of events in a multidisciplinary network that monitor seismicity, telluric field, magnetic field, electric-electrostatic field, radio ULF waves, air ionization, radon concentration, solar radiation, infrasound, light and acoustic phenomena, meteorological parameters, air-earth temperatures, satellite data(More)
The probabilistic seismic hazard assessment (PSHA) in dense-populated geographical regions and subsequently the design of the strategic objectives are primary based on the knowledge of the seismicity parameters of the seismogenic sources which can generate ground motion amplitudes above the minimum level considered risky at the specific site. The PSHA deals(More)
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