7 December 1992 Sol-gel chemistry for nonlinear optics
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Nonlinear optical materials have been synthesized via the sol-gel route. A chemical control of the reactivity of molecular precursors toward hydrolysis and condensation allows the deposition of transparent thin or thick films. Potassium titanyl phosphate (KTP) can be better synthesized from phosphoester precursors [PO(OH)3-x(OR)x] rather than phosphoric acid [PO(OH)3] or phosphate esters [PO(OR)3]. These precursors lead to crystalline transparent KTP thin films around 600 degree(s)C. Organic molecules for nonlinear optics can be embedded into an oxide sol-gel matrix. Second harmonic generation has been obtained after poling with thick films in which organic chromophores are chemically bonded to the oxide backbone via the use of functionalized silicon alkoxide precursors.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jacques Livage, Jacques Livage, Caroline Schmutz, Caroline Schmutz, P. Griesmar, P. Griesmar, Philippe Barboux, Philippe Barboux, Clement Sanchez, Clement Sanchez, "Sol-gel chemistry for nonlinear optics", Proc. SPIE 1758, Sol-Gel Optics II, (7 December 1992); doi: 10.1117/12.132021; https://doi.org/10.1117/12.132021


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