Method of making biopolymer-based nonlinear optical materials

Details Method of making biopolymer-based nonlinear optical materials Method of making biopolymer-based nonlinear optical materials

1994-03-24

1996-04-30

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Light polarizing article or holographic article

252585, 264 136, 264435, 264299, 385122, 385141, B29D 1100, G02F 137

Patent

active

055122183

ABSTRACT:
A biopolymer film and other materials that exhibit nonlinear optical (NLO) properties and a method for making this film. Alignment of biopolymer molecules, which is required for NLO phenomena, is achieved by application of an electric field parallel to the surface of a biopolymer solution as the film is formed. In one embodiment, a solution of poly(.gamma.-benzyl-L-glutamate), PBLG, in methylene chloride is employed. Upon application of an electric field, laminar structures perpendicular to both the field direction and to the film surface are formed. These ordered structures are captured in the film upon evaporation of the biopolymer solvent.

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