Method of making a frequency doubling structure in an optically

Details Method of making a frequency doubling structure in an optically Method of making a frequency doubling structure in an optically

1992-12-11

1994-02-22

Lee, John D.

Optical: systems and elements

Optical frequency converter

Harmonic generator

156629, 156668, 385122, G02F 137

Patent

active

052893081

ABSTRACT:
In an optically non-linear (NLO) polymeric material a frequency doubling structure composed of alternatingly poled NLO polymer is made. This structure can be made by forming a layer of NLO polymer, effecting poling in it with the use of an electric field, partially removing the layer of NLO polymer by etching, such that in the polymer a grating structure is formed composed of etched grooves and projecting polymer parts, the width of the grooves matching that of the polymer parts, dividing the polymer layer containing the grating structure into at least two sections, and placing the two sections one on top of the other, such that grooves of the one section are back-filled by projecting polymer parts of the other section. To prevent the enclosure of air a filler may be added, preferably in the form of a solution of the NLO polymer.

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W. H. G. Horsthuis et al., "Simple Measuring Method for Electro-Optic Coefficients in Poled Polymer Waveguides", Appl. Phys. Lett. 55(7), Aug. 14, 1989, pp. 616-618.
P. R. Ashley et al., "New Poling Techniques for Electro-Optic Polymer Devices", Integrated Photonics Research 1991, p. 87.
D. J. Williams, "Organic Polymeric and Non-Polymeric Materials With Large Optical Nonlinearities", Angew. Chem. Int. Ed. Engl. 23(1984), 690-703.

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