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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 25, Iss. 11 — Nov. 1, 2008
  • pp: 1786–1793

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

Harry Figi, Lukas Mutter, Christoph Hunziker, Mojca Jazbinšek, Peter Günter, and Benjamin J. Coe  »View Author Affiliations


JOSA B, Vol. 25, Issue 11, pp. 1786-1793 (2008)
http://dx.doi.org/10.1364/JOSAB.25.001786


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Abstract

We report on the extremely large nonresonant quadratic optical nonlinearity of the stilbazolium salt trans- 4 -(dimethylamino)-N-phenyl-4-stilbazolium hexafluorophosphate (DAPSH). The phenyl-pyridinium chromophores in DAPSH crystals grown from acetone solution pack with a highly aligned polar order, resulting in a very large birefringence, Δ n = 1.17 ± 0.06 at λ = 0.83 μ m and Δ n = 0.83 ± 0.04 at λ = 1.55 μ m . More importantly, this leads to an extremely large diagonal quadratic susceptibility with the nonlinear optical coefficient for second-harmonic generation reaching up to d 111 = 290 ± 40 pm V at 1.907 μ m fundamental wavelength, which presents a considerable improvement with respect to the presently best material trans- 4 -(dimethylamino)-N-methyl-4-stilbazolium tosyate (DAST) with d 111 = 210 ± 55 pm V at λ = 1.907 μ m . The result is in agreement with the preferential packing of the chromophores and the previous studies demonstrating higher microscopic nonlinearity of the chromophores in DAPSH compared to that of DAST.

© 2008 Optical Society of America

OCIS Codes
(160.4330) Materials : Nonlinear optical materials
(160.4760) Materials : Optical properties
(160.4890) Materials : Organic materials
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials

ToC Category:
Materials

History
Original Manuscript: July 11, 2008
Revised Manuscript: August 20, 2008
Manuscript Accepted: August 22, 2008
Published: October 8, 2008

Citation
Harry Figi, Lukas Mutter, Christoph Hunziker, Mojca Jazbinšek, Peter Günter, and Benjamin J. Coe, "Extremely large nonresonant second-order nonlinear optical response in crystals of the stilbazolium salt DAPSH," J. Opt. Soc. Am. B 25, 1786-1793 (2008)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-25-11-1786

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