482 research outputs found

    Monolithic integration of InGaAs p-i-n photodetector with full ion-implanted InP JFET amplifier

    Get PDF
    monolithically integrated p-i-n FET amplifier has been fabricated using ion-implanted indium phosphide (InP) JFETs. The vertically integrated material structure consists of a vapor phase epitaxy (VPE) grown InCaAs photoabsorption layer and a metal organic chemical vapor deposition (MOCVD) grown Fe-doped semi-insulating layer. A Zn diffusion was performed to complete the p-i-n photodiode. High-performance fully implanted InP JFETs were used to form the integrated amplifier with a symmetrical design to remove the dc offset. With a receiver sensitivity of ~ 36.4 dBm measured at 200-Mbit/s NRZ for IO RER, it is easily the most sensitive monolithic p-i-n FET preamp yet reported in this frequency range. The p-i-n amplifier has a dynamic range of 15 dH.The authors would like to acknowledge the help from Y. Ota, J. M. Geary, R. E. Frahm, and K. J. OBrien in device packaging and in dielectric deposition

    All-sky Search for High-Energy Neutrinos from Gravitational Wave Event GW170104 with the ANTARES Neutrino Telescope

    Full text link
    Advanced LIGO detected a significant gravitational wave signal (GW170104) originating from the coalescence of two black holes during the second observation run on January 4th^{\textrm{th}}, 2017. An all-sky high-energy neutrino follow-up search has been made using data from the ANTARES neutrino telescope, including both upgoing and downgoing events in two separate analyses. No neutrino candidates were found within ±500\pm500 s around the GW event time nor any time clustering of events over an extended time window of ±3\pm3 months. The non-detection is used to constrain isotropic-equivalent high-energy neutrino emission from GW170104 to less than 4×1054\sim4\times 10^{54} erg for a E2E^{-2} spectrum

    The ANTARES Collaboration: Contributions to ICRC 2017 Part III: Searches for dark matter and exotics, neutrino oscillations and detector calibration

    Get PDF
    Papers on the searches for dark matter and exotics, neutrino oscillations and detector calibration, prepared for the 35th International Cosmic Ray Conference (ICRC 2017, Busan, South Korea) by the ANTARES Collaboratio

    The ANTARES Collaboration: Contributions to ICRC 2017 Part I: Neutrino astronomy (diffuse fluxes and point sources)

    Get PDF
    Papers on neutrino astronomy (diffuse fluxes and point sources, prepared for the 35th International Cosmic Ray Conference (ICRC 2017, Busan, South Korea) by the ANTARES Collaboratio

    The ANTARES Collaboration: Contributions to ICRC 2017 Part II: The multi-messenger program

    Get PDF
    Papers on the ANTARES multi-messenger program, prepared for the 35th International Cosmic Ray Conference (ICRC 2017, Busan, South Korea) by the ANTARES Collaboratio

    Search for High-energy Neutrinos from Binary Neutron Star Merger GW170817 with ANTARES IceCube and the Pierre Auger Observatory

    Get PDF
    The Advanced LIGO and Advanced Virgo observatories recently discovered gravitational waves from a binary neutron star inspiral. A short gamma-ray burst (GRB) that followed the merger of this binary was also recorded by the Fermi Gamma-ray Burst Monitor (Fermi-GBM), and the Anti-Coincidence Shield for the Spectrometer for the International Gamma-Ray Astrophysics Laboratory (INTEGRAL), indicating particle acceleration by the source. The precise location of the event was determined by optical detections of emission following the merger. We searched for high-energy neutrinos from the merger in the GeV-EeV energy range using the Antares, IceCube, and Pierre Auger Observatories. No neutrinos directionally coincident with the source were detected within ± 500 s around the merger time. Additionally, no MeV neutrino burst signal was detected coincident with the merger. We further carried out an extended search in the direction of the source for high-energy neutrinos within the 14 day period following the merger, but found no evidence of emission. We used these results to probe dissipation mechanisms in relativistic outflows driven by the binary neutron star merger. The non-detection is consistent with model predictions of short GRBs observed at a large off-axis angle

    The Antares Collaboration : Contributions to the 34th International Cosmic Ray Conference (ICRC 2015, The Hague)

    Get PDF
    The ANTARES detector, completed in 2008, is the largest neutrino telescope in the Northern hemisphere. Located at a depth of 2.5 km in the Mediterranean Sea, 40 km off the Toulon shore, its main goal is the search for astrophysical high energy neutrinos. In this paper we collect the 21 contributions of the ANTARES collaboration to the 34th International Cosmic Ray Conference (ICRC 2015). The scientific output is very rich and the contributions included in these proceedings cover the main physics results, ranging from steady point sources, diffuse searches, multi-messenger analyses to exotic physics

    High-speed signal switching with a monolithic integrated p-i-n/amp/switch on indium phosphide

    Get PDF
    Operation of an optoelectronic integrated circuit which includes two p-i-ns, preamplifiers, 2 x 2 crosspoint .switch, and output buffers has been demonstrated. These circuits have been fabricated in semi-insulating 1nP:Fe substrates by vapor phase epitaxy and ion implantation using a planar horizontally integrated technology. Signals modulated at 150 MHz are shown to be switched at 15 MHz, with the circuits capable of detecting and passing data modulated at - 1 GHz
    corecore