Two dimensional dynamic focusing of laser light by ferroelectric domain based electro-optic lenses

The authors demonstrate the proof of concept of two dimensional focusing of laser light. This has been achieved by using a combination of two cylindrical electro-optic ferroelectric domain lens stacks in an orthogonal geometry. The devices were fabricated on z-cut lithium tantalate (LiTaO3) wafers and tested with helium-neon laser at 633nm. Continuously tunable optical power ranging from −129m−1to129m−1 is obtained in both directions by varying the applied voltage.