Electro-optic laser beam shaping by patterned ferroelectric domains

Krishnamurthi, Mahesh; Li, Peng; Singh, Aseem; Thomas, J. G.; Lehecka, T. M.; Liu, Z.; Gopalan, V.
November 2009
Applied Physics Letters;11/16/2009, Vol. 95 Issue 20, p202902
Academic Journal
We demonstrate laser beam shaping by utilizing the linear electro-optic effect in patterned ferroelectric domains in lithium tantalate. The phase function essential for the conversion of a 633 nm wavelength laser light from a Gaussian to a flat-top intensity profile was computed using the Gerchberg–Saxton algorithm. The corresponding ferroelectric domain pattern required to induce the equivalent phase function was fabricated on a lithium tantalate crystal, and the performance compared with design specifications.


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