Seminars on the direct dectectoin of gravitational waves
Following the annoucement of the direct detection of gravitational waves, a one day meeting is organized on 17th Feb. 2016. The seminars will address the detectors, the observed signals, the consequences on astrophysics and fundamental physics.
This meeting will take place on Wednesday 17th Feb. 2016, starting at 09:30, in the amphitheatre Turing, Sophie Germain Building, Paris-Diderot University.
=> More information
Next FIRST-TF general assembly
The next FIRST-TF general assembly will take place on 24th March 2016 in University Paris 13 (Villetaneuse).
It is open to all FIRST-TF members. Agenda: presentation of highlights and projects funded by FIRST-TF, discussions.
Defense of thesis to Édouard RICHARD – “Study and realization of a new spatio-temporal reference system based on inter-satellite links in a GNSS constellation”
Edouard RICHARD will defend his thesis on the subject :
“Study and realization of a new spatio-temporal reference system based on inter-satellite links in a GNSS constellation”
The defense will take place on westeday Wednesday, 27 of January 2016 at 14:30 in l’amphithéâtre de l’IAP (Observatoire de Paris).(Paris)
This thesis performed under the supervision of Peter WOLF and Pacôme DELVA
“CASCADE LASER COMPONENTS & SYSTEMS: TECHNOLOGY AND MARKET TRENDS”
Tematys is pleased to announce the release of its new report “Cascade Laser Components & Systems: Technology and Market trends”.
Today, advances in cascade lasers (CL) are revolutionizing infrared spectroscopy and OEMs can count on two mature alternatives: interband cascade lasers (ICLs) that are expected to be a cost killer in the 3-6µm spectrum, and quantum cascade lasers (QCLs), with more power and a continuous wider spectral resolution from 3 to 300µm.
New CL-based applications are launched every day. The market is getting mature with strong players for driving applications like industry, environment, life science or transports.
As a consequence, the Cascade Laser (CL) market is expected to grow from 148M$ in 2015 up to 1.7B$ in 2024 with a strong CAGR increase due to the maturation of commercial products using CL components.
The present report analyzes CL components, systems and application markets trends. It evaluates the potential and the challenges to be faced in more than 25 market segments and provides an application roadmap for the next decade.
It also provides extensive market data in M$ from 2014 to 2024 for different applications: Industry, Security & Defence, Environment, Health Care, Transports.
Online sales: http://tematys.fr/Publications/
Flyer and order form: TEMATYS’ Cascade Laser report – Flyer and order form
Press release: TEMATYS’ Cascade Laser report – Release announcement
Contact : Benoît d’Humières ; bdhumieres(at)tematys.com
Proceedings of the 5th Galileo Science Colloquium available online
The official Proceedings of the 5th Galileo Science Colloquium which took place from the 27th to the 29th of October 2015 at PTB, Braunschweig, Germany are now
available online at: http://www.congrexprojects.com/2015-events/15a08/proceedings
The Posters/Presentations and/or Papers can be downloaded in PDF format.
PhD defense of Irina BALAKIREVA “Non-linear dynamics of Kerr optical frequency combs”
Launch of LISA PATHFINDER
ESA’s LISA Pathfinder lifted off earlier on Thursday, 3rd Dec. on a Vega rocket from Europe’s spaceport in Kourou, French Guiana, on its way to demonstrate technology for observing gravitational waves from space.
PhD defense of Anthony BERCY: “Ultrastable optical fiber link : multiple-users dissemination, study of fundamental and technological limits and new applications”
Anthony BERCY will defend his PhD thesis , entitled “Ultrastable optical fiber link : multiple-users dissemination, study of fundamental and technological limits and new applications”. His thesis work was accomplished within a collaboration between LPL and SYRTE. His thesis grant has been co-funded by FIRST-TF.
Coordinated Universal Time (UTC) to retain “leap second”
The ITU World Radiocommunication Conference (WRC-15), currently in session in Geneva from 2 to 27 November, has decided that further studies are required on the impact and application of a future reference time-scale, including the modification of coordinated universal time (UTC) and suppressing the so-called “leap second”.
PhD defense of Alexis BONNIN : ” Dual-Species Atom Interferometry and Applications to Inertial Measurements “
Alexis BONNIN will defend his PhD thesis , entitled “Dual-Species Atom Interferometry and Applications to Inertial Measurements”, which work was accomplished in ONERA . The defense will take place on Monday, 23 of November 2015 at 14:00 in Laboratoire Aimé Cotton (Salle Balmer), Orsay.
Summary :
In the emerging issue of testing the Equivalence Principle with cold atom inertial sensors, this thesis focuses on the realization and the characterization of a simultaneous dual-species atom interferometer (87Rb & 85Rb) which allows to measure the differential acceleration in an extremely sensitive way. The Mach-Zehnder type atom interferometer relies on the simultaneous handling of atomic wave-packets with stimulated Raman transitions. The laser system is based on the frequency doubling of a single laser source at 1560 nm. All the required laser frequencies for handling both isotopes (trapping, cooling, selection, interferometry and detection) are generated by phase modulating this source. A detailed modeling of the interferometer’s inertial responses and an analysis of a method to extract the differential phase were carried out. The differential acceleration measurement led to an atom based test of the Weak Equivalence Principle of η( 87Rb, 85Rb) = (1.3 ± 3.2) × 10− 7, at the state-of-the-art. The simultaneous aspect of the experiment allowed to highlight for the first time common mode vibration noise rejection with two different atomic species, a rejection factor of 50 000 being currently achieved. The current performance of the instrument exhibits a sensitivity on the differential acceleration of 1.23 × 10− 7 g/sqrt(Hz) and a resolution of 2 × 10− 9 g for integration times lower than few hours. Finally, innovative operating modes of dual-species atom interferometers for on-board acceleration measurements are explored.