Acousto-Optic Interaction of Bessel Light Beams in the LiBi(MoO4)2 Crystal

The features of anisotropic acousto-optic (AO) diffraction of a Bessel light beam (BLB) on the transversely polarized plane acoustic wave in the LiBi(MoO
4
)
2
crystal of tetragonal symmetry of the 4/m class are investigated. A new optical scheme of AO diffraction is proposed, in which BLB is formed inside a crystal from an annular incident beam. Resonance curve is constructed and diffraction efficiency of BLB is calculated for several cone angles of the incident Bessel beam.