Improvement of the Cerenkov Radiative Second Harmonic Generation in the Slab Waveguide with a Periodic Nonlinear Optical Susceptibility

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概要

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• Introducing a periodically corrugated nonlinear optical (NLO) susceptibility X^<(2)> in the guiding layer of a three-layered slab waveguide, we propose a Cerenkov radiative second harmonic generation (SHG) with numerical calculations, and experimentally demonstrate it. With vinylidene cyanide/vinyl acetate copolymer film having a sinusoidal X^<(2)> corrugation of 60 μm period as a guiding layer, the Cerenkov scheme of SHG was enhanced over a wide film thickness range at 1.06-μm fundamental wavelength, obtaining an enhancement factor of acd1.5 in comparison with a uniform X^<(2)> scheme. Experimental dependences of the SHG power on both corrugation period and path length agree well with theoretical estimates, indicating usefulness of the modified Cerenkovian SHG with the corrugated X^<(2)>.

• 社団法人応用物理学会の論文
• 1993-02-15

著者

• Sato Hisao

  Nitride Semiconductor Co. Ltd.

• Sato H

  Research And Development Center Gunze Limited

• Sato Hiroyasu

  Faculty Of Engineering Mie University

• Sato Hiroharu

  Multimedia Eng. Lab.

• Sato Heihachi

  Department Of Electrical Engineering National Defense Academy

• Sato H

  Department Of Applied Chemistry Faculty Of Engineering Kumamoto University

• Sunagawa Hiromi

  Department Of Applied Physics Faculty Of Engineering Tohoku University

• AZUMAI Yuji

  Department of Electrical Engineering, National Defense Academy

• Azumai Y

  Department Of Electrical Engineering National Defense Academy

• Azumai Yuji

  Department Of Electrical Engineering National Defense Academy

• Sato Hisao

  Department of Applied Physics, Graduate School of Engineering, Tohoku University

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