By Topic

Control of the laser frequency of the Virgo gravitational wave interferometer with an in-loop relative frequency stability of 1.0 × 10−21 on a 100 ms time scale

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

157 Author(s)
Acernese, F. ; Lab. d''Annecy-le-Vieux de Phys. des Particules (LAPP), Univ. de Savoie, Annecy-le-Vieux, France ; Alshourbagy, M. ; Antonucci, F. ; Aoudia, S.
more authors

The measurement of the space-time structure variations induced by strong cosmic events (supernovae, coalescing binaries of neutron stars, etc.) requires an oscillator with a relative stability of 10-21 on time scales typically ap100 ms. We demonstrate that the Virgo interferometer with a wavelength of 1.064 degm has a laser frequency with an in-loop stability of 1.0 times 10-21 on a 100 ms time scale, and an in-loop frequency noise of 2 times 10-7 Hz/radic(Hz) at 10 Hz. We show that this fits the specifications. Two references successively stabilize the laser frequency. The first one is a 144 m long suspended cavity; the second one is the common mode of two perpendicular 3 km long Fabry-Perot cavities. The differential mode of the relative length variations of these two optical cavities is the port where we expect the signal for the gravitational waves; this out-of-loop measurement, less sensitive to laser frequency noise, does not show up correlations with the in-loop error signal. This is the best ever performance of short term laser frequency stabilization reported.

Published in:

Frequency Control Symposium, 2009 Joint with the 22nd European Frequency and Time forum. IEEE International

Date of Conference:

20-24 April 2009