Simple piezoelectric-actuated mirror with 180 kHz servo bandwidth.
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.
Briles
Travis C
TC
JILA, National Institute of Standards and Technology and University of Colorado, Colorado 80309-0440, USA. travis.briles@colorado.edu
Yost
Dylan C
DC
Cingöz
Arman
A
Ye
Jun
J
Schibli
Thomas R
TR
D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D055617:Micro-Electrical-Mechanical Systems / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*; D014159:Transducers; D014732:Vibration