R. DeSalvo
A5107884124- Pulsars and Gravitational Waves Research
- Gamma-ray bursts and supernovae
- Geophysics and Gravity Measurements
- Astrophysical Phenomena and Observations
- Cosmology and Gravitation Theories
- Astrophysics and Cosmic Phenomena
- Geophysics and Sensor Technology
- Seismic Waves and Analysis
- High-pressure geophysics and materials
- Particle physics theoretical and experimental studies
- Photonic Crystal and Fiber Optics
- Advanced Fiber Laser Technologies
- Radio Astronomy Observations and Technology
- Advanced Frequency and Time Standards
- Atomic and Subatomic Physics Research
- Advanced Fiber Optic Sensors
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Optical Network Technologies
- Photoacoustic and Ultrasonic Imaging
- Astronomical Observations and Instrumentation
- Optical Imaging and Spectroscopy Techniques
- Black Holes and Theoretical Physics
- Cold Atom Physics and Bose-Einstein Condensates
- Particle Detector Development and Performance
University of Sannio
2015-2024
Universidad de La Laguna
2021-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2013-2023
University of Utah
2022-2023
Leibniz University Hannover
2018-2021
Laser Zentrum Hannover
2016-2021
Max Planck Institute for Gravitational Physics
2017-2021
California State University Los Angeles
2017-2021
Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Salerno
2020-2021
California State University System
2019
The Laser Interferometer Gravitational Wave Observatory (LIGO) consists of two widely separated 4 km laser interferometers designed to detect gravitational waves from distant astrophysical sources in the frequency range 10 Hz kHz. first observation run Advanced LIGO detectors started September 2015 and ended January 2016. A strain sensitivity better than $10^{-23}/\sqrt{\text{Hz}}$ was achieved around 100 Hz. Understanding both fundamental technical noise critical for increasing observable...
We report on a search for gravitational waves from coalescing compact binary systems in the Milky Way and Magellanic Clouds. The analysis uses data taken by two of three LIGO interferometers during first science run illustrates method setting upper limits inspiral event rates using interferometer data. pipeline is described with particular attention to selection coincidence between interferometers. establish an observational limit R<1.7×102 per year Equivalent Galaxy (MWEG), 90% confidence,...
Achieving the demanding sensitivity and bandwidth, envisaged for third generation gravitational wave (GW) observatories, is extremely challenging with a single broadband interferometer. Very high optical powers (Megawatts) are required to reduce quantum noise contribution at frequencies, while interferometer mirrors have be cooled cryogenic temperatures in order thermal sources low frequencies. To resolve this potential conflict of test masses load, we present conceptual design 2-band...
The Laser Interferometer Gravitational-wave Observatory (LIGO) has performed the fourth science run, S4, with significantly improved interferometer sensitivities respect to previous runs. Using data acquired during this we place a limit on amplitude of stochastic background gravitational waves. For frequency independent spectrum, new is $Ω_{\rm GW} < 6.5 \times 10^{-5}$. This currently most sensitive result in range 51-150 Hz, factor 13 improvement over LIGO result. We discuss...
Measurements of the ${e}^{+}{e}^{\ensuremath{-}}$ cross section above $B\overline{B}$ threshold are reported. Structures observed which could be $\ensuremath{\Upsilon}(5S)$ and $\ensuremath{\Upsilon}(6S)$ resonances. The masses widths given compared with various potential-model predictions. Average charged multiplicities inclusive lepton yields also presented.
Next-generation gravitational wave detectors require single-frequency and high power lasers at a wavelength of 1.5 µm addressing set demanding requirements such as linearly-polarized TEM00 radiation with low noise to run for long periods. In this context, fiber amplifiers in MOPA configuration are promising candidates fulfill these requirements. We present monolithic Er:Yb co-doped amplifier (EYDFA) output 100 W. The EYDFA is pumped off-resonant 940 nm enhance the Yb-to-Er energy transfer...
We report results on the differential and total cross sections for inclusive production of charmed particles ${D}^{\mathrm{*}+}$, ${D}^{\mathrm{*}0}$, ${D}^{0}$, ${D}^{+}$, ${D}_{s}$, ${\mathrm{\ensuremath{\Lambda}}}_{\mathit{c}}$ in ${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$ annihilations at \ensuremath{\surd}s=10.55 GeV. Widely used quark fragmentation models are discussed compared with measured charmed-particle momentum distributions. This comparison, as well that...
At the beginning of 2016, first direct detection a gravitational wave by laser-based Michelson interferometer has been reported. So far, number confirmed detections raised to three and will certainly increase further. Thereby, mankind an amazing new tool observe study universe, namely astronomy. However, in order develop their full potential, more sensitive generation earth-bound detectors be required future. Current are operating with solid-state laser systems at 1064 nm but higher output...
We have investigated the transitions \ensuremath{\Upsilon}(3S)\ensuremath{\rightarrow}${\ensuremath{\pi}}^{+}$${\ensuremath{\pi}}^{\mathrm{\ensuremath{-}}}$\ensuremath{\Upsilon}(1S) and \ensuremath{\Upsilon}(3S)\ensuremath{\rightarrow}${\ensuremath{\pi}}^{+}$${\ensuremath{\pi}}^{\mathrm{\ensuremath{-}}}$\ensuremath{\Upsilon}(2S) cascade process \ensuremath{\Upsilon}(3S)\ensuremath{\rightarrow}\ensuremath{\Upsilon}(2S)+X,...
We report on a search for gravitational wave bursts in data from the three LIGO interferometric detectors during their third science run. The targets subsecond frequency range 100-1100 Hz which no waveform model is assumed, and has sensitivity terms of root-sum-square (rss) strain amplitude hrss ~ 10^{-20} / sqrt(Hz). No signals were detected 8 days analyzed data.
We report on the observation of exclusive decays B mesons to modes containing a D or ${D}^{\mathrm{*}+}$ and one two charged pions. From kinematic reconstruction we determine masses neutral be 5280.6\ifmmode\pm\else\textpm\fi{}0.8\ifmmode\pm\else\textpm\fi{}2.0 5278.6\ifmmode\pm\else\textpm\fi{}0.8\ifmmode\pm\else\textpm\fi{}2.0 MeV, respectively. The mass difference is 2.0\ifmmode\pm\else\textpm\fi{}1.1\ifmmode\pm\else\textpm\fi{}0.3 MeV. Branching ratios for these are given....
We have searched for the exclusive decay of $\ensuremath{\Upsilon}(1S)$ into a photon and short-lived spin-0 particle, $a$, decaying ${e}^{+}{e}^{\ensuremath{-}}$, using CLEO detector at Cornell Electron Storage Ring. Upper limits product branching ratio $B(\ensuremath{\Upsilon}(1S)\ensuremath{\rightarrow}\ensuremath{\gamma}a)B(a\ensuremath{\rightarrow}{e}^{+}{e}^{\ensuremath{-}})$ are established range masses, $2{m}_{e}<{m}_{a}<2{m}_{\ensuremath{\mu}}$.
An array of seismometers is being developed at the Sanford Underground Laboratory, former Homestake mine, in South Dakota to study properties underground seismic fields and Newtonian noise, investigate possible advantages constructing a third-generation gravitational-wave detector underground. Seismic data were analyzed characterize noise disturbances. External databases used identify sources waves: ocean-wave oceanic microseisms surface wind-speed correlations with motion as function depth....
We have studied proton-antiproton elastic scattering at $\sqrt{s}=1800$ GeV the Fermilab Collider, in range $0.02<|t|<0.13$ ${(\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c})}^{2}$. Fitting distribution by $\mathrm{exp}(\ensuremath{-}B|t|)$, we obtain a value of $B$ 17.2\ifmmode\pm\else\textpm\fi{}1.3 ${(\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c})}^{\ensuremath{-}2}$.
We have observed decays of the $\ensuremath{\Upsilon}(1S)$ into hadronic final states containing high-energy photons. These are interpreted as coming from decay $\ensuremath{\Upsilon}(1S)\ensuremath{\rightarrow}\ensuremath{\gamma}+\mathrm{gluon}+\mathrm{gluon}$. compare shape photon energy spectrum with several theoretical predictions and deduce value strong-coupling constant ${\ensuremath{\alpha}}_{s}$ QCD scale parameter ${\ensuremath{\Lambda}}_{\stackrel{-}{\mathrm{MS}}}$...
We have used the CLEO detector to study Bose-Einstein (BE) correlations among charged pions produced in hadronic decays of \ensuremath{\Upsilon}(1S) and continuum ${e}^{+}$${e}^{\mathrm{\ensuremath{-}}}$ annihilations around \ensuremath{\surd}s =10.5 GeV. discuss different parametrizations effect, find indications that production long-lived particles these events can account for observed reduction strength effect. determined source dimensions quark gluon jets. From standpoint BE...
Abstract The fabrication of three-dimensional (3D) nanostructures within optical materials is currently a highly sought-after capability. Achieving nanoscale structuring media its inner volume in 3D and with free design flexibility, high accuracy precision development yet to be demonstrated. In this work, laser nanolithography technique developed which allows producing mm-long hollow nanopores inside solid-state crystals degree control pore cross-sectional aspect ratio size. We report an...
Emerging applications, such as gravitational wave astronomy, demand single-frequency lasers with diffraction-limited emission at 1.5 μm. Fiber amplifiers have greatly evolved to fulfill these requirements. Hundreds of watts are feasible using large-mode-area and specialty fibers. However, their application in a few tens monolithic systems is unnecessarily complex due the poor commercial availability fiber components standard integration procedures. In this Letter we propose experimentally...
In the hyperthermia therapy, multiple microwave sources can be arranged with appropriate spacing around tissue containing tumor by using left-handed material (LHM) lenses.We employ some low loss LHM lenses schemes for an effective non-invasive treatment of large tumors up to several centimeters depth inside biological tissues.Different configurations are proposed and compared in order assess efficiency treatment.High-resolution focusing radiation achieved joint heating antennas behind a...
Large mode area fibers have become indispensable in addressing the power requirements of laser sources gravitational wave detectors. Besides high capabilities, system must provide an excellent beam quality and polarization. In this Letter, we present characterization a monolithic high-power fiber amplifier at 1064 nm, built using ytterbium-doped chirally coupled-core fiber, which achieves output 100 W linearly polarized $ {{\rm TEM}_{00}} $TEM00 all-fiber setup.
This paper presents an analysis of the transient behavior Advanced LIGO suspensions used to seismically isolate optics. We have characterized transients in longitudinal motion quadruple during LIGO's first observing run. Propagation between stages is consistent with modelled transfer functions, such that originating at top suspension chain significantly reduced amplitude test mass. find there are seen by monitors suspensions, but they not correlated above noise floor gravitational wave...
We report an analytical model and experimental validation of the temporal dynamics 3-level system fiber amplifiers. The predictions show a good agreement with measured pump power to output phase transfer functions in EDFA pumped at 976 nm, as well typical literature values for spontaneous lifetime involved energy levels. measurements linear relation between effective meta-stable level power, filtering temperature-induced phase-shift due quantum defect sufficiently high frequency modulation.
The use of pulsed high-power diode lasers (HPDLs) in the near infrared (NIR) range as multispectral sources has attracted much interest biomedical applications due to their relatively low cost and small size compared nanosecond Nd:YAG optical parametric oscillator (OPO) lasers. One main limitations these is availability combine different wavelengths with high power density same beam. Various works have shown that linear arrays emitters laser bars (DLBs) or stacked stacks (DLSs) allows...