Open AccessElectro-optic thin films of organic nonlinear optic molecules aligned through vacuum deposition
Author(s) -
Weiwei Sun,
Zhaohong Wang,
Antao Chen,
Ilya V. Kosilkin,
Denise H. Bale,
Larry R. Dalton
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.011189
Subject(s) - poling , materials science , thin film , optics , vacuum deposition , vacuum evaporation , substrate (aquarium) , optoelectronics , evaporation , wafer , electrode , wavelength , nonlinear optics , interferometry , electric field , deposition (geology) , second harmonic generation , ultra high vacuum , nanotechnology , laser , oceanography , physics , chemistry , sediment , geology , biology , dielectric , ferroelectricity , thermodynamics , quantum mechanics , paleontology
Nonlinear optical molecules can be vacuum deposited into uniform thin films using thermal evaporation. Alignment order can be achieved during thin film deposition by an in-plane electrical field poling using electrodes patterned on the substrate. Electro-optic (EO) coefficients, r33 and r13 are independently measured using Young's interferometry technique. Thin-films of N-benzyl-2-methyl-4-nitroaniline (BNA) can exhibit an EO coefficient, r33, comparable to that of BNA single crystals. EO coefficients of BNA at different poling fields, wavelengths, and frequencies are investigated.