arXiv physics/03080802003-08-22physics.ins-det

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

Jeah-Sheng Wu, Wei-Tou Ni, Sheng-Jui Chen

备注：: This draft has been presented in the 5th Edoardo Amaldi Conference on Gravitational Waves
发表信息：: Class.Quant.Grav. 21 (2004) S1259
DOI：: 10.1088/0264-9381/21/5/130

英文摘要：

We have built and tested a 3.5 m high-finesse Fabry-Perot prototype inteferometer 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. 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-minute integration.

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