Power recycling was implemented on a fully suspended prototype interferometer with arm lengths of 20 m. A wave-front-sensing technique for alignment control of the suspended mirrors was also implemented, which allowed for several hours of stable operation. A power-recycling gain of greater than 12 was achieved, a significant increase over the highest gain in a suspended mirror Fabry–Perot Michelson interferometer reported to date.
© 2000 Optical Society of America
(000.2780) General : Gravity
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(350.1270) Other areas of optics : Astronomy and astrophysics
Shuichi Sato, Masatake Ohashi, Masa-Katsu Fujimoto, Mitsuhiro Fukushima, Koichi Waseda, Shinji Miyoki, Nergis Mavalvala, and Hiroaki Yamamoto, "High-Gain Power Recycling of a Fabry–Perot Michelson Interferometer for a Gravitational-Wave Antenna," Appl. Opt. 39, 4616-4620 (2000)