A Full Optical Characterisation Of The Organic Non-Linear Optical Material (-) 2-(∝-Methylbenzylamino)-5-Nitropyridine (MBA-NP)

Abstract
Large (7x4x4 cm3) crystals of the organic, nonlinear optical material MBA-NP have been prepared by growth from solution, in an optically and structurally highly perfect state. Oriented, cut and polished specimens were examined by the Maker fringe technique. Analysis of the data yielded a coherence length, 122 of 1.8 μm (cf MNA 111 = 0.7μm and quartz 111 = 20μm). Type I, phase-matched second harmonic generation (efficiency 50% at 117 MWCm was observed for 1.06μm radiation incident at 28.8° to the y-axis on the y-z incident plane. There was no evidence of type II phase matching. d22 = 30x10-12 m.V-1 and d14 is between 1 and 10x10-12 m.V-1.

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