Tip-tilt mirror suspension: beam steering for advanced laser interferometer gravitational wave observatory sensing and control signals.
We describe the design of a small optic suspension system, referred to as the tip-tilt mirror suspension, used to isolate selected small optics for the interferometer sensing and control beams in the advanced LIGO gravitational wave detectors. The suspended optics are isolated in all 6 degrees of freedom, with eigenmode frequencies between 1.3 Hz and 10 Hz. The suspended optic has voice-coil actuators which provide an angular range of ±4 mrad in the pitch and yaw degrees of freedom.
Department of Quantum Science, College of Physical and Mathematical Sciences, The Australian National University, Physics Building 38a, Science Road, Acton 0200, Australia. bram.slagmolen@anu.edu.au
Bram J J
BJ
Slagmolen
Adam J
AJ
Mullavey
John
J
Miller
David E
DE
McClelland
Peter
P
Fritschel