Highly efficient acoustooptic diffraction in Sn2P2S6 crystals

We have studied the acoustooptic (AO) diffraction in Sn2P2S6 crystals and found that they manifest high values of AO figure of merit. The above crystals may therefore be used as highly efficient materials in different AO applications.Comment: 5 pages, 1 figur

Study of the Optical Activity of Ferroelectric Lead Germanate

A new optical method for measuring the optical activity of crystals is developed. Temperature dependence of gyration component g$\text{}_{11}$ of ferroelectric lead germanate is measured. The obtained results confirm that lead germanate may be considered as a gyroelectric crystal