Parametric interactions in the organic salt 4-N, N-dimethylamino-4′-N′-methyl-stilbazolium tosylate at telecommunication wavelengths

We show that the organic salt 4-N,N-dimethylamino-4'-N'-methyl-stilbazolium tosylate, originally developed for electro-optic applications, is also a very interesting material for phase-matched parametric interactions such as frequency-doubling and optic parametric oscillation in the near infrared. These favorable properties are due to the large off-diagonal element d(26) which gives measured effective phase-matchable nonlinear optical coefficients of d(eff)=31+/-5 and 15+/-3 pm/V at the telecommunication wavelengths of lambda = 1313 and 1535 nm, respectively. (C) 1998 American Institute of Physics. [S0021-8979(98)03507-5].