view article
Figure 1
Fizeau interferometer measurement of the inverse radius of curvature of three micro-focus bimorph mirrors as a function of time after a 1000 V impulse was applied to the piezoelectric actuators. Mirrors 1 and 2 are old-fashioned bimorph mirrors which drift in curvature over time. Mirror 3, a new optic mounted in a strain-free holder, exhibits significantly less drift and has subsequently been installed on the I24 beamline at Diamond as a horizontally focusing mirror. Curvature data are plotted as a percentage change relative to each mirror's steady state. Stabilization in open loop to within <1% is achieved in 20 s for Mirror 3. This proves that optimized bimorph deformable mirrors are intrinsically capable of being rapidly changed and stabilized in only a few seconds.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 26| Part 1| January 2019| Pages 45-51
https://doi.org/10.1107/S1600577518015965
Follow J. Synchrotron Rad.
Sign up for e-alerts
E-alerts
Follow J. Synchrotron Rad. on Twitter
Twitter
Follow us on facebook
Facebook
Sign up for RSS feeds
RSS