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Piezo-actuated tunable diamond/AlN micro lenses

: Zürbig, V.; Pätz, D.; Pletschen, W.; Hees, J.; Sah, R.E.; Kirste, L.; Heidrich, N.; Cimalla, V.; Nebel, C.; Ambacher, O.; Lebedev, V.

Institute of Electrical and Electronics Engineers -IEEE-:
Transducers 2013, 17th International Conference on Solid-State Sensors, Actuators and Microsystems : Eurosensors XXVII; Barcelona, Catalonia (Spain); 16 - 20 June 2013
Piscataway, NJ: IEEE, 2013
ISBN: 978-1-4673-5981-8
ISBN: 978-1-4673-5983-2
International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers) <17, 2013, Barcelona>
European Conference on Solid-State Transducers (Eurosensors) <27, 2013, Barcelona>
Conference Paper
Fraunhofer IAF ()
aluminum nitride; nanocrystalline diamond; micro optics; piezo-actuation

Tunable micro lenses based on boron-doped nanocrystalline diamond and aluminum nitride (AlN) thin films are investigated. It is demonstrated that such a material combination is advantageous for the fabrication of highly transparent, mechanically stable optical components capable to operate at high actuation frequencies. In addition, it is shown that radially segmented AlN piezo-actuators allow for free aspheric deformation of the lens surface. It enables the use of such tunable lenses either in wave front filters or for correction of aberrations induced in complex optical systems.