482 research outputs found
Monolithic integration of InGaAs p-i-n photodetector with full ion-implanted InP JFET amplifier
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
Advanced LIGO detected a significant gravitational wave signal (GW170104)
originating from the coalescence of two black holes during the second
observation run on January 4, 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 s around the GW
event time nor any time clustering of events over an extended time window of
months. The non-detection is used to constrain isotropic-equivalent
high-energy neutrino emission from GW170104 to less than
erg for a spectrum
The ANTARES Collaboration: Contributions to ICRC 2017 Part III: Searches for dark matter and exotics, neutrino oscillations and detector calibration
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)
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
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
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)
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
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
- …