title: Simple piezoelectric-actuated mirror with 180 kHz servo bandwidth.
abstract: We present a high bandwidth piezoelectric-actuated mirror for length stabilization of an optical cavity. The actuator displays a transfer function with a flat amplitude response and greater than 135 masculine phase margin up to 200 kHz, allowing a 180 kHz unity gain frequency to be achieved in a closed servo loop. To the best of our knowledge, this actuator has achieved the largest servo bandwidth for a piezoelectric transducer (PZT). The actuator should be very useful in a wide variety of applications requiring precision control of optical lengths, including laser frequency stabilization, optical interferometers, and optical communications.
authors.affiliation: JILA, National Institute of Standards and Technology and University of Colorado, Colorado 80309-0440, USA. travis.briles@colorado.edu
authors.forename: Travis C
authors.initials: TC
authors.lastname: Briles
authors.forename: Dylan C
authors.initials: DC
authors.lastname: Yost
authors.forename: Arman
authors.initials: A
authors.lastname: Cingöz
authors.forename: Jun
authors.initials: J
authors.lastname: Ye
authors.forename: Thomas R
authors.initials: TR
authors.lastname: Schibli
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D055617:Micro-Electrical-Mechanical Systems / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*; D014159:Transducers; D014732:Vibration