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Bulk Phase-Matched Second-Harmonic Generation in Drawn and Poled Polymers

  • X. T. Tao
  • H. Ukuda
  • T. Watanabe
  • S. Miyata

Abstract

Phase-matched second-harmonic generation (SHG) has been realized from a drawn and poled main-chain polyurea (PU) by end-fire coupling at the fundamental wavelength of 1.064 μm. The PU was synthesized from 4,4’-diphenylmethane diisocyanate and 4,4’-methylene bis(cyclohexylamine). The free-standing films were drawn and poled simultaneously by zone drawing and poling apparatus developed by ourself. By drawing, the birefringence between the in-plane and in the film normal directions can be controlled and such kind birefringence can be used for phase matching just like in biaxial single crystals. The type I phase-matching was realized in experiments. By this method, phase-matching at a number of interested wavelengths can be realized. Moreover, noncritical phase-matching in poled polymers at certain draw ratio is also possible.

Keywords

Draw Ratio Film Plane Second Harmonic Pole Polymer Diphen Ylmethane Diisocyanate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • X. T. Tao
    • 1
  • H. Ukuda
    • 1
  • T. Watanabe
    • 1
  • S. Miyata
    • 1
  1. 1.Faculty of TechnologyTokyo University of Agriculture and TechnologyKoganei-shi, Tokyo 184Japan

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