Phase-matched Optical Second-harmonic Generation in the Organic Crystal MBA-NP, (−)2-(α-methylbenzylamino)-5-nitropyridine

R.T. Bailey Department of Pure and Applied Chemistry, The University of Stratchclyde, Cathedral Street, Glasgow, G1 1XL, Scotland

F.R. Cruickshank Department of Pure and Applied Chemistry, The University of Stratchclyde, Cathedral Street, Glasgow, G1 1XL, Scotland

S.M.G. Guthrie Department of Pure and Applied Chemistry, The University of Stratchclyde, Cathedral Street, Glasgow, G1 1XL, Scotland

B.J. McArdle Department of Pure and Applied Chemistry, The University of Stratchclyde, Cathedral Street, Glasgow, G1 1XL, Scotland

H. Morrison Department of Pure and Applied Chemistry, The University of Stratchclyde, Cathedral Street, Glasgow, G1 1XL, Scotland

D. Pugh Department of Pure and Applied Chemistry, The University of Stratchclyde, Cathedral Street, Glasgow, G1 1XL, Scotland

E.A. Shepherd Department of Pure and Applied Chemistry, The University of Stratchclyde, Cathedral Street, Glasgow, G1 1XL, Scotland

J.N. Sherwood Department of Pure and Applied Chemistry, The University of Stratchclyde, Cathedral Street, Glasgow, G1 1XL, Scotland

C.S. Yoon Department of Pure and Applied Chemistry, The University of Stratchclyde, Cathedral Street, Glasgow, G1 1XL, Scotland

R. Kashyap British Telecom Research Laboratories, Martlesham Heath, Ipswich, IP5 7RE, England

B.K. Nayar British Telecom Research Laboratories, Martlesham Heath, Ipswich, IP5 7RE, England

K.I. White British Telecom Research Laboratories, Martlesham Heath, Ipswich, IP5 7RE, England

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Abstract

Large (5 × 3 × 3 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 at a wavelength of 1·064 µm. Analysis of the data yielded d ₂₂ as 69 × d₁₁ quartz with a corresponding coherence length of 2 µm. A large rotation of the X and Z dielectric axes with wavelength (30° over 200 nm) was observed. Type I phase-matched second-harmonic generation (SHG) was recorded. For the 1·064 µm dielectric axis set and a (010) faced crystal, phase matched SHG was observed for rotation about X to an angle of incidence of 45°. This angle is very sensitive to the correct alignment of dielectric axes and the effect of its misalignment was investigated.

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Phase-matched Optical Second-harmonic Generation in the Organic Crystal MBA-NP, (−)2-(α-methylbenzylamino)-5-nitropyridine

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Phase-matched Optical Second-harmonic Generation in the Organic Crystal MBA-NP, (−)2-(α-methylbenzylamino)-5-nitropyridine

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