Open AccessExtremely long decay time optical cavity
Author(s) -
F. Della Valle,
E. Milotti,
A. Ejlli,
U. Gastaldi,
G. Messineo,
L. Piemontese,
G. Zavattini,
R. Pengo,
G. Ruoso
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.011570
Subject(s) - finesse , optics , optical cavity , resonator , fabry–pérot interferometer , physics , coherence length , polarization (electrochemistry) , laser , coherence (philosophical gambling strategy) , materials science , chemistry , superconductivity , quantum mechanics
We report on the resonant Fabry Perot cavity of the PVLAS (Polarization of the Vacuum with LASer) experiment operating at λ = 1064 nm with a record decay time of 2.7 ms, a factor more than two larger than any previously reported optical resonator. This corresponds to a coherence length of 8.1 · 10(5) m. The cavity length is 3.303 m, and the resulting finesse is 770,000.