title: Full electrical characterization of aperiodic acoustic gratings by an enhanced delta-function model: theory and experiment.
abstract: We derive the admittance of an aperiodic one-dimensional acoustic grating with acoustically matched boundaries using an enhanced delta-function model combined with the Green's function approach. The expression obtained is compared with the classical delta-function model and with electric back reflection measurements on a linearly chirped bulk acoustic grating with matched boundaries formed in LiNbO3 by domain inversion and excited in "crossed-field" scheme. The agreement between calculated and measured results is excellent.
authors.affiliation: School of Physical Sciences, University of Kent at Canterbury, United Kingdom. H.W.J.Gnewuch@ukc.ac.uk
authors.forename: H
authors.initials: H
authors.lastname: Gnewuch
authors.forename: N K
authors.initials: NK
authors.lastname: Zayer
authors.forename: C N
authors.initials: CN
authors.lastname: Pannell