Note: Simple and compact piezoelectric mirror actuator with 100 kHz bandwidth, using standard components
2013 (English)In: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 84, no 5, 056112- p.Article in journal (Refereed) Published
We propose a mounting scheme to control the displacement of a mirror (or other small object) by a cylindrical piezoelectric actuator, giving uniform response and no phase lag up to high frequencies. This requires a simple ring holder, and unmodified off-the-shelf components. In our implementation, the piezo-mirror assembly has its first mechanical resonance around 120 kHz, close to the resonance for the bare piezo. The idea is to decouple the fundamental elongation mode of the piezo-mirror assembly from the holder by side-clamping the assembly at its zero-displacement plane for this mode. The main drawback is a reduced mirror displacement, by a factor 2 in our case (mirror displacement is similar to 2.5 mu m). Also, the mirror needs to be light with respect to the piezo: still, we use a standard half-inch mirror. The resulting system is very compact as it fits inside a 1-in. commercial steering mirror post.
Place, publisher, year, edition, pages
2013. Vol. 84, no 5, 056112- p.
Accelerator Physics and Instrumentation
IdentifiersURN: urn:nbn:se:umu:diva-76813DOI: 10.1063/1.4807859ISI: 000319999300086OAI: oai:DiVA.org:umu-76813DiVA: diva2:637074