High finesse opto-mechanical cavity with a movable thirty-micron-size mirror.
We report on the demonstration of a high finesse micro-optomechanical system and identify potential applications ranging from optical cooling to weak force detection to massive quantum superpositions. The system consists of a high quality diameter flat dielectric mirror cut from a larger substrate with a focused ion beam and attached to an atomic force microscope cantilever. Cavity ring-down measurements performed on a 25 mm long Fabry-Pérot cavity with the 30 microm mirror at one end show an optical finesse of 2100. Numerical calculations show that the finesse is not diffraction limited and that orders of magnitude higher finesse should be possible. A mechanical quality factor of more than 10(5) at pressures below 10(-3) mbar is demonstrated for the cantilever with a mirror attached.
Kleckner
Dustin
D
Department of Physics, University of California, Santa Barbara, 93106, USA.
Marshall
William
W
de Dood
Michiel J A
MJ
Dinyari
Khodadad Nima
KN
Pors
Bart-Jan
BJ
Irvine
William T M
WT
Bouwmeester
Dirk
D