A5076324083- Geophysics and Sensor Technology
- Advanced Frequency and Time Standards
- Advanced Measurement and Metrology Techniques
- Advanced Fiber Laser Technologies
- Mechanical and Optical Resonators
- Photonic and Optical Devices
- Optical Coatings and Gratings
- Semiconductor Lasers and Optical Devices
- Gas Sensing Nanomaterials and Sensors
- Advanced Fiber Optic Sensors
- Transition Metal Oxide Nanomaterials
- Analytical Chemistry and Sensors
- Optical Systems and Laser Technology
- Seismic Waves and Analysis
- Photoacoustic and Ultrasonic Imaging
- Laser Material Processing Techniques
- Image Processing Techniques and Applications
- Adaptive optics and wavefront sensing
- Calibration and Measurement Techniques
- Spacecraft and Cryogenic Technologies
- Atmospheric Ozone and Climate
- Surface Roughness and Optical Measurements
- Advanced MEMS and NEMS Technologies
- Advanced Fluorescence Microscopy Techniques
- Optical Coherence Tomography Applications
University of Padua
2016-2018
Center for Biomolecular Nanotechnologies
2017-2018
National Research Council
2017-2018
Istituto Nazionale di Fisica Nucleare, Sezione di Padova
2016-2017
Istituto Nazionale di Fisica Nucleare
2016
Superconducting and other Innovative Materials and Devices Institute
2016
GINGER (Gyroscopes IN GEneral Relativity) is a proposal for measuring in ground-based laboratory the Lense-Thirring effect, known also as inertial frame dragging, that predicted by General Relativity, and induced rotation of massive source. will consist an array at least three square ring lasers, mutually orthogonal, with about 6-10 m side, located deep underground site, possibly INFN - National Laboratories Gran Sasso. The tri-axial design provide complete estimation angular velocity, to be...
Two ring laser gyroscopes are being developed by the INFN in view of fundamental Physics applications. The scope this activity is to `fill gap' between present state art technology and requirements sensitivity accuracy needed for general relativity tests. first prototype, called GP2 located at Pisa, dedicated interferometric control cavity form factor. second GINGERino, a larger deep underground (INFN LNGS) has characterizing low frequency rotational noise site. We show most recent results...
Active control of the geometrical parameters large ring-lasers arrays is a challenging task, requiring development an accurate length monitoring system acting on edges these devices. The proposed solution based what was outlined by NASA JPL for its discontinued Space Interferometric Mission (SIM). It will be made up network compact laser heterodyne interferometers, working together to keep frame constantly well known (and fixed) nanometer accuracy. We took first steps towards realization...
We present the design, implementation, and characterization of a heterodyne laser interferometer for nanometer displacement metrology. The purpose is to monitor 3-D shape large optomechanical structure planned future general relativity experiments. Reaching target 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-11</sup> -m uncertainty over 7-m distances many days' integration periods challenging task. solution here investigated consists...
The sensitivity achieved by large ring-laser gyroscopes will make it possible to detect faint relativistic effects related the rotation of Earth's mass. This task requires a strict control ring cavity geometry (shape and orientation), which can be performed novel network portable heterodyne interferometers, capable measuring absolute distance betweeen two retro-reflectors with nominal accuracy better than 1nm. First steps have been taken towards realization this device starting prototype...
An optical setup able to switch between the surface-plasmon resonance (SPR) angular resolved spectroscopy in Kretschmann’s configuration and SPR imaging is presented. The system’s concept based on an adaptive module which allows perform two complementary measurements by sharing all elements avoiding any moving part. Among main advantages given this switching feature there are both fast calibration capability of image using optimization chip probing area.
Metallic films of palladium (Pd) and palladium-tin (Pd-Sn) have been deposited by evaporation technique. They were used as sensitive material for optical sensor measuring the variation absorbance. All samples then oxidized annealing at 500°C in low vacuum atmosphere. investigated X-Ray Diffraction (XRD), Atomic Force Microscopy (AFM) to observe influence structure morphology on properties films, carrying useful information sensing different materials. Furthermore, performances tested...
One main focus of high precision heterodyne displacement interferometers are the means splitting and merging for reference <i>(R</i>) measurement (<i>M</i>) beams when a cancelable circuit is implemented. Optical mixing R M gives birth to systematc error called cyclic error, which appears as periodic offset between detected actual one. <br/> A simple derivation due optical proposed design.<i> R</i> <i>M</i> beatings collected by two photodiodes conveniently converted transimpedance...
Optical components such as mirrors, filters and windows need to be tested qualified verify their resistance in space environments. Future missions, ESA JUICE SOLO, will operate harsh environments, rich of ions electrons. Experiments development appropriate protocols are needed develop proper radiation-hard qualify them.