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Second and third order Nonlinear Optical Properties of Crystalline Inorganic / Organic Complexes.
Published online by Cambridge University Press: 21 February 2011
Abstract
The properties for members of a new class of nonlinear optical (NLO) materials which stoichiometrically incorporate organic and inorganic constituents into a single crystalline lattice are reported. Recent results for our synthetic, crystal growth, and optical studies suggest that a number of these relatively transparent “semiorganic” compounds have significant second and/or third order NLO responses and often display favorable crystal growth morphologies.
The prototype material of this class, zinc tris(thiourea) sulfate, or ZTS, has a UV cutoff at about 325 nm, can be readily grown to cm3 sizes, and has been shown to be a highly efficient Type II frequency doubler for 1064 nm Nd:YAG laser radiation. ZTS also possesses a moderate third order nonlinear optical response (ca. 0.1 × CS2) which occurs on at least a picosecond time scale as determined by degenerate four-wave mixing (DFWM) experiments at 532 nm.
Refractive index, second harmonic generation, and DFWM data for a number of these new compounds are presented.
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- Copyright © Materials Research Society 1992