Extremely large nonresonant second-order nonlinear optical response in crystals of the stilbazolium salt DAPSH

Figi, Harry; Mutter, Lukas; Hunziker, Christoph; Jazbinšek, Mojca; Günter, Peter; Coe, Benjamin J.

doi:10.1364/josab.25.001786

Cited by 44 publications

(36 citation statements)

References 35 publications

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“…The technique is also so versatile that it can be applied to several other organic NLO materials as long as the growth of them from the melt is feasible. Further effort is underway [31,39] to combine the favorable crystal growth properties of DAT2 with a more optimal chromophore alignment in the crystal to achieve higher NLO coefficients comparable to the ones of the ionic salts, such as DAST and the presently best material DAPSH [40]. Table A1.…”

Section: Resultsmentioning

confidence: 99%

Electro-optic single-crystalline organic waveguides and nanowires grown from the melt

Figi¹,

Jazbinšek²,

Hunziker³

et al. 2008

Opt. Express

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Organic nonlinear optical materials have proven to possess high and extremely fast nonlinearities compared to conventional inorganic crystals, allowing for sub-1-V driving voltages and modulation bandwidths of over 100 GHz. Compared to more widely studied poled electro-optic polymers, organic electro-optic crystals exhibit orders of magnitude better thermal and photochemical stability. The lack of available structuring techniques for organic crystals has been the major drawback for exploring their potential for photonic structures. Here we present a new approach to fabricate high-quality electro-optic single crystal waveguides and nanowires of configurationally locked polyene DAT2 (2-(3-(2-(4-dimethylaminophenyl)vinyl)-5,5-dimethylcyclohex-2-enylidene)malononitrile). The high-index-contrast waveguides (delta(n) = 0.54 +/- 0.04) are grown from the melt between two anodically bonded borosilicate glass wafers, which are structured and equipped with electrodes prior to bonding. Electro-optic phase modulation is demonstrated for the first time in the non-centrosymmetric DAT2 single crystalline channel waveguides at a wavelength of 1.55 microm. We also show that this technique in combination with DAT2 material allows for the fabrication of single-crystalline nanostructures inside large-area devices with crystal thicknesses below 30 nm and lengths of above 7 mm.

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Section: Resultsmentioning

confidence: 99%

Electro-optic single-crystalline organic waveguides and nanowires grown from the melt

Figi¹,

Jazbinšek²,

Hunziker³

et al. 2008

Opt. Express

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“…Fortunately, molecules (6) and (10) adopt the polar space group C C and show SHG activity of 0.8 and 1.0 times that of DAST [66,67]. Second-order NLO susceptibility of crystals made of chromophore (6) with PF 6 -counter anion higher than that of DAST have been reported [68]. Figure 20.…”

Section: Figure20 Molecular Structure Of Ohq-tms (A) and Single Crysmentioning

confidence: 97%

Molecular Structures and Second-Order Nonlinear Optical Properties of Ionic Organic Crystal Materials

et al. 2016

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Abstract:In recent years, there has been extensive research and continuous development on second-order nonlinear optical (NLO) crystal materials due to their potential applications in telecommunications, THz imaging and spectroscopy, optical information processing, and optical data storage. Recent progress in second-order NLO ionic organic crystal materials is reviewed in this article. Research has shown that the second-order nonlinear optical properties of organic crystal materials are closely related to their molecular structures. The basic structures of ionic organic conjugated molecules with excellent nonlinear optical properties are summarized. The effects of molecular structure, for example, conjugated π electron systems, electronic properties of donor-acceptor groups, and different counter-anion effects on second order NLO properties and crystal packing are studied.

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“…Several stilbazolium salts have been identified with similar or even superior nonlinear optical properties than DAST, also combined with better crystal growth/processing possibilities. For example, trans-4-dimethylamino-N-phenyl-stilbazolium hexafluorophosphate (DAPSH) has a very high diagonal secondorder susceptibility tensor element χ (2) 111 = 580 ± 80 pm/V, which is considerably higher than that of DAST (χ (2) 111 = 420 ± 110 pm/V) at λ = 1.907 μm, 3 which is the highest non-resonant second-order susceptibility obtained so far. 4-N,N-dimethylamino-4'-N'-methyl-stilbazolium 2,4,6-trimethylbenzenesulfonate (DSTMS) -see Fig.…”

Section: Stilbazolium Salt Crystalsmentioning

confidence: 97%

Organic electro-optic single crystalline films for integrated optics

et al. 2010

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We have fabricated organic electro-optic single crystalline thin films on various inorganic substrates. A high refractive index contrast of up to Δn = +0.6 at 1.55 μm with respect to glass substrates and up to Δn = −1.9 at 1.55 μm with respect to silicon substrates has been achieved. The single crystalline films can be grown quasi-epitaxially without lattice matching and also on amorphous substrates providing appropriate interface interactions and solid-liquid phase equilibrium conditions. The thickness of the single-crystalline films can vary between less than 30 nm and above 5000 nm; they are therefore appropriate for optical waveguiding structures, as well as nano-size electro-optic structures needed for future nanophotonics. Several organic electro-optic crystalline materials have been employed using solution or melt-based processing. The techniques are suitable for the fabrication of conventional wire electro-optic waveguides, silicon-organic hybrid electro-optic waveguides, as well as more complex organic-inorganic structures such as single-crystalline electro-optic microring resonators.

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Extremely large nonresonant second-order nonlinear optical response in crystals of the stilbazolium salt DAPSH

Cited by 44 publications

References 35 publications

Electro-optic single-crystalline organic waveguides and nanowires grown from the melt

Electro-optic single-crystalline organic waveguides and nanowires grown from the melt

Molecular Structures and Second-Order Nonlinear Optical Properties of Ionic Organic Crystal Materials

Organic electro-optic single crystalline films for integrated optics

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