Abstract
We show that the organic salt 4-N,N-dimethylamino-4′-N′-methyl-stilbazolium tosylate (DAST), developed for electro-optic applications, also is an interesting material for phase-matched parametric interactions such as frequency-doubling and optic parametric oscillation in the near infrared. Based on measured refractive indices we predict configurations for phase matched frequency doubling and promising tuning ranges for optical parametric oscillation. We determined experimentally a figure of merit for frequency doubling, deff2/n3=230 pm2/V2 at 1313 nm which is almost 30 times the one of KNbO3 (7.9 pm2/V2) or 120 times the one of KTP (1.9 pm2/V2).
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