LINEAR AND NONLINEAR-OPTICAL PROPERTIES OF A NEW ORGANIC-CRYSTAL, N-(4-AMINOBENZENESULFONYL)ACETAMIDE

A new organic crystal, N-(4-aminobenzenesulfonyl)acetamide, was identi fied as a promising candidate for frequency doubling to the blue regio n. Large square-bipyramidal single crystals up to 8 mm X 8 mm X 18 mm in size have been successfully grown by the slow-cooling technique. Op tical transmission of the crystal ranges from 400 to 1100 nm. The disp ersions of refractive indices were measured by the minimum-deviation m ethod. The nonlinear-optical d coefficients at 1064 nm were evaluated to be d(33) = 6.2 pm/V, d(31) = 3.3 pm/V, and d(15) = 2.8 pm/V by the Maker-fringe technique. Type II phase matching was theoretically and e xperimentally demonstrated when the crystal was pumped at fundamental wavelengths between 762 and 1064 nm. Detailed characteristics of phase -matched second-harmonic generation were evaluated, along with crystal processing techniques such as cutting, polishing, and antireflection coating. (C) 1996 Optical Society of America