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Photonic Applications With the Organic Nonlinear Optical Crystal DAST

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3 Author(s)
Jazbinsek, M. ; Inst. of Quantum Electron., Nonlinear Opt. Lab., ETH Zurich, Zurich ; Mutter, L. ; Gunter, P.

We review the recent progress in the development of photonic applications based on the organic crystal 4-N, N-dimethylamino-4'-N'-methyl-stilbazolium tosylate (DAST). DAST is an organic salt with an extremely high nonlinear optical susceptibility chi(2)(-2omega,omega,omega)=580plusmn30 pm/V at 1.54 mum, a high electrooptic figure of merit n 3 r = 455plusmn80 pm/V at 1.54 mum, as well as a low dielectric constant epsiv = 5.2 . DAST is, therefore, very attractive for high-speed optical modulators and field detectors, as well as for frequency conversion and the generation of terahertz waves. Several techniques to microscopically structure this material have been developed recently; including modified photolithography, photobleaching, femtosecond laser ablation, graphoepitaxial growth, ion implantation, and direct electron-beam structuring, which open new perspectives of using this exceptional material for high-speed very-large-scale integrated photonics.

Published in:

Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:14 ,  Issue: 5 )

Date of Publication:

Sept.-oct. 2008

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