Applications of non linear and electro-optic materials. INORGANIC MATERIALS. Sol-gel processing of thin-layer dielectrics in lead-titanate-based systems K D Budd and D A Payne. High speed optical switches using sputtered PLZT thin films H Higashino, H Adachi, K Setsune and K Wasa. MOCVD growth of inorganic thin films C J Brierley and C Trundle. Periodically domain-inverted waveguides in lithium niobate for second harmonic generation: influence of the shape of the domain boundary on the conversion efficiency G Arvidsson and B Jaskorrzynska X-ray topographic study of alpha lithium iodate crystals under a static electric field M T Sebastian, H Klapper and S Haussuhl. From atomic positions to non linear optical properties in materials of the KTiOPO4 (KTP) family of second-harmonic generators P A Thomas. New non-linear optical materials of the KTiOPO4 family J Mangin, G Marnier, B Boulanger and B Menaert. Room temperature electronic optical non linearities in polycrystalline ZnSe W Ji, J R Milward, A K Kar, B S Wherrett and C R Pidgeon. Preparation of single crystal fibers R S Feigelson. Laser densification of sol-gel silica glass D J Shaw, A J Berry and T A King. Experimental determiniation of thermal nonlinearities of semiconductor doped glasses S De Nicola, P Mormile, G Pierattini, G Abbate, U Bernini, P Maddalena and G Assanto. ORGANIC MATERIALS: esign and synthesis of organic nonlinear optical materials M G Hutchings, P F Gordon and J O Morley. Single crystals Growth of organic single crystals N Karl. The non-linear optics and phase matching locus of 4-nitro-4-methylbenzylidene aniline (NMBA) R T Bailey, G H Bourhill, F R Cruickshank, S M G Guthrie, G W McGillivray, D Pugh, E E A Shepherd, J N Sherwood, G S Simpson and C S Yoon. Nonlinear optical and electro-optic properties of 2-(N-prolinol)-5-nitropyridine (PNP) crystals K Sutter, Ch Bosshard, L Baraldi and P Gunter. Optical and nonlinear optical properties of 4-(N,N-dimethylamino)-3-acetamidonitrobenzene single crystals P Kerkoc, M Zdonik, K Sutter, Ch Bosshard and P Gunter. Characterization: Characterization of organic nonlinear materials G R Meredith, L T Cheng, H Hsiung, H A Vanherzeele and F C Zumsteg. A simple method for the determination of (3)-coefficients based on the DC kerr effect H M M Klein Koerkamp, T H Hoekstra, G J M Krihnen, A Driessen, P V Lambeck and Th J A Popma. 157-162 Pump-and probe beam measurements in organic materials S Graham, R Renner, C Klingshirn, W Schrepp, R Reisfeld, D Bruislovsky and M Eyal. Langmuir-Blodgett films. Langmuir-Blodgett films for non-linear optical applications S Allen. Synthesis and LB-monolayer properties of amphiphilic rigid rod molecules J Nordmann and W Herbst. Nonlinear optical Y-type Langmuir-Blodgett films of 2-docosylamino-5-nitropyridine Ch Bosshard, B Tieke, M Seifert and P Gunter. A new non-linear optical Langmuir-Blodgett film material based on a liquid crystalline butadiyre J Tsibouklis, J Cresswell, C Pearson, M C Petty and W J Feast. Liquid crystals. Measurement of thermal and reorientational third order optical nonlinearities in liquid crystal fluids with absorption K J McEwan, K J Harrison and P A Madden. Advances in fast electro-optical phenomena in liquid crystals K Skarp. Electro-optic and nonlinear optical devices using liquid crystals J Staromlynska, D W Craig, R A Clay, A Miller, K J Harrison and D Tytler. Towards ordered conjugated polymers for non-linear optics: acetylenic and diacetylenic liquid-crystalline derivatives, side-chain polyacetylene J Le Moigne, B Francois, D Guillon, A Hilberer, A Skoulios, A Soldera and F Kajzar. Polymers: Non-linear optical and electro-optical properties of polymer thin films for non-linear optical applications J R Hill, P Pantelis and G J Davies. Polydiacetylene waveguide structures: thermal stability and optical losses in poly(4BCMU) films G L Baker, J A Shelburne III and P D Townsend. The relationship between structure and nonlinear optical properties in donor-acceptor polyenes C W Spangler, T J Hall, M L Saindon, R D Rogers, R K Coy, R R Birge, P A G Fleitz and Chian-Fan Zhang. Very large quadratic non-linearities of push-pull polyenes. Effect of the conjugation path and of the end groups M Barzouka, M Blanchard-Desce, D Josse, J-M Lehn and J Zyss. Optothermal nonlinearities in the polydiacetylene pTS T G Harvey, W Ji, A K Kar, B S Wherrett, D Bloor, P A Norman and D J Ando. Author Index