Evaporated polyurea films for optical modulators

Abstract Electrooptically active planar waveguides of aromatic polyurea were prepared by simultaneous deposition of 4,4'-diamino-diphenyl-methane and 4,4'-diphenylmethane-diisocyanate from the vapor phase and subsequent corona poling. Attenuated total reflectance spectroscopy of the waveguide modes of the polymer films was used to measure the piezoelectric and electrooptic susceptibilities. The contributions of the nonlinear polarizability of the urea groups and their dipolar orientation in the applied field are identified. Possible applications of this material for novel optical modulator geometries are discussed.

[1]  Donald M. Burland,et al.  SECOND-ORDER NONLINEARITY IN POLED-POLYMER SYSTEMS , 1994 .

[2]  E. Fukada,et al.  Piezoelectric properties of thin films of aromatic polyurea prepared by vapor deposition polymerization , 1991 .

[3]  Barton A. Smith,et al.  Electro-optic coefficients in electric-field-poled polymer waveguides , 1991 .

[4]  Ralph H. Page,et al.  Electrochromic and optical waveguide studies of corona-poled electro-optic polymer films , 1990 .

[5]  Gary C. Bjorklund,et al.  Poled amorphous polymers for second-order nonlinear optics , 1990 .

[6]  F. P. Payne,et al.  Evanescent field amplification in a tapered single-mode optical fibre , 1990 .

[7]  E. Fukada,et al.  Pyroelectricity in Poled Thin Films of Aromatic Polyurea Prepared by Vapor Deposition Polymerization , 1989 .

[8]  Jerome D. Swalen,et al.  Corona poling and real‐time second‐harmonic generation study of a novel covalently functionalized amorphous nonlinear optical polymer , 1989 .

[9]  M. Dumont,et al.  Electrooptic properties of a ferroelectric polymer studied by attenuated total reflection , 1989 .

[10]  R. B. Comizzoli,et al.  Electro‐optic phase modulation and optical second‐harmonic generation in corona‐poled polymer films , 1988 .

[11]  Mark G. Kuzyk,et al.  Second-order nonlinear-optical processes in orientationally ordered materials: relationship between molecular and macroscopic properties , 1987 .

[12]  Joseph Zyss,et al.  Nonlinear optical properties of organic molecules and crystals , 1987 .

[13]  D. A. Dunnett.  Classical Electrodynamics , 2020, Nature.