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Optical Systems

Nonlinear-optical-devices

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Nonlinear optical devices

Details

Inventors: Teng, Chia-Chi; Stamatoff, James B.; Buckley, Alan; Garito, Anthony F.;
Assignee: Hoechst Celanese Corporation (Somerville, NJ)
Primary Examiner: LaRoche; Eugene R.
Assistant Examiner: Mottola; Steven J.
Attorney, Agent or Firm: Depaoli & O'Brien

This invention provides optical devices with an organic nonlinear optical component which is a transparent medium of a wholly aromatic polymer which exhibits a third order nonlinear optical susceptibility .chi..sup.(3) of at least about 1.times.10.sup.-12 esu. Illustrative of an invention embodiment is an ultrafast all-optical gate device with a transparent poly([benzo(1,2-d:4,5-d')bisthiazole-2,6-diyl]-1,4-phenylene) optical component which exhibits a third order nonlinear optical susceptibility .chi..sup.(3) of 10.times.10.sup.-12 esu.

DETAILED DESCRIPTION What is claimed is: 1.
An optical device with an organic nonlinear optical component comprising an optically transparent medium of a wholly aromatic polymer which exhibits a third order nonlinear optical susceptibility .
chi.
.
sup.
(3) of at least about 1.
times.
10.
sup.
-12 esu as measured at 1.
91 .
mu.
m excitation wavelength, wherein the polymer component is characterized by a recurring structural unit corresponding to the formula: --Z--Ar-- where Z is an aromatic heterocyclic radical, and Ar is a divalent aryl radical.
2.
An optical device in accordance with claim 1 wherein the polymer component is a liquid crystalline polymer.
3.
An optical device in accordance with claim 1 wherein the polymer component has a weight average molecular weight between about 10,000-200,000.
4.
An optical device in accordance with claim 1 wherein the Z radical in the formula contains a benzimidazole structure.
5.
An optical device in accordance with claim 1 wherein the Z radical in the formula contains a benzthiazole structure.
6.
An optical device in accordance with claim 1 wherein the Z radical in the formula contains a benzoxazole structure.
7.
A laser frequency converter device with an organic nonlinear optical component comprising an optically transparent medium of a wholly aromatic polymer which exhibits a third order nonlinear optical susceptibility .
chi.
.
sup.
(3) of at least about 1.
times.
10.
sup.
-12 esu as measured at 1.
91 .
mu.
m excitation wavelength, wherein the polymer component is characterized by a recurring structural unit corresponding to the formula: --Z--Ar-- where Z is an aromatic heterocyclic radical, and Ar is a divalent aryl radical.
8.
An optical Kerr effect device with an organic nonlinear optical component comprising an optically transparent medium of a wholly aromatic polymer which exhibits a third order nonlinear optical susceptibility .
chi.
.
sup.
(3) of at least about 1.
times.
10.
sup.
-12 esu as measured at 1.
91 .
mu.
m excitation wavelength, wherein the polymer component is characterized by a recurring structural unit corresponding to the formula: --Z--Ar-- where Z is an aromatic heterocyclic radical, and Ar is a divalent aryl radical

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