Building a 3.5 m prototype interferometer for the Q&A vacuum birefringence experiment and high-precision ellipsometry

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In this Subject: Nuclear Physics
By this author: Ni W-T. ;&nbsp; Chen S-J. ;&nbsp; Wu J-S.

Authors: Ni W-T.; Chen S-J.; Wu J-S.

Source: Classical and Quantum Gravity, Volume 21, Number 5, 7 March 2004 , pp. S1259-S1263(5)

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Abstract:

We have built and tested a 3.5 m high-finesse Fabry–Perot prototype interferometer with a precision ellipsometer for the QED test and axion search (Q&A) experiment. We use X-pendulum–double-pendulum suspension designs and automatic control schemes developed by the gravitational-wave detection community. The Verdet constant and Cotton–Mouton constant of the air are measured as a test. Double modulation with polarization modulation 100 Hz and magnetic-field modulation 0.05 Hz gives 10^-7 rad phase noise for a 44 min integration.

Document Type: Research article

DOI: http://dx.doi.org/10.1088/0264-9381/21/5/130

Publication date: 2004-03-07