title: Monolithic bulk shear-wave acousto-optic tunable filter.
abstract: We demonstrate a monolithic bulk shear-wave acousto-optic tunable filter combining a piezoelectric transducer array and the acoustic interaction medium in a single crystal. An X-propagating acoustic longitudinal wave is excited in the "crossed-field" scheme by an rf-Ey-field in a chirped acoustic superlattice formed by domain-inversion in lithium niobate (LiNbO3). The acoustic longitudinal wave is efficiently (97.5%) converted at a mechanically free boundary into a Y-propagating acoustic slow-shear wave that couples collinearly propagating e- and o-polarized optical waves. A relative conversion efficiency of 80%/W was measured at 980 nm.
authors.affiliation: School of Physical Sciences, University of Kent at Canterbury, Canterbury CT2 7NR, United Kingdom. H.W.J.Gnewuch@ukc.ac.uk
authors.forename: Harald
authors.initials: H
authors.lastname: Gnewuch
authors.forename: Christopher N
authors.initials: CN
authors.lastname: Pannell
mesh_terms: D000162:Acoustics / Q000295:instrumentation*; D003198:Computer Simulation; D003460:Crystallization / Q000295:instrumentation*; D004867:Equipment Design; D008962:Models, Theoretical; D009556:Niobium; D055095:Optics and Photonics / Q000295:instrumentation*; D010087:Oxides; D011786:Quality Control; D013314:Stress, Mechanical; D013685:Telecommunications / Q000295:instrumentation; D014159:Transducers
chemical_list: D010087:Oxides; D009556:Niobium; C091692:lithium niobate