Experimental Study on a Second-Harmonic Intensity Modulator with Quasi-Phase-Matched Optical Waveguides

Kenchi Ito, Sten Helmfrid, Kimio Tatsuno

Research output: Contribution to journalArticle

Abstract

A second-harmonic intensity modulator with quasi-phase-matched optical waveguide is fabricated and demonstrated. The domain-inverted structure and proton-exchanged optical waveguides are fabricated on a Z-cut LiTaO3 substrate. Traveling-wave type Al electrodes are fabricated on the SiO2 buffer layer. Second-harmonic radiation can be modulated by giving phase mismatch to the second-harmonic generator by using the electro-optic effect. The conversion efficiency of the device is 0.4%/Wcm2 and the switching voltage is 180 V, when the duty ratio of the quasi-phase-matched grating is 0.4. Modulation is achieved up to about 1 MHz.

Original languageEnglish
Number of pages1
JournalJapanese journal of applied physics
Volume33
Issue number7R
DOIs
Publication statusPublished - 1994 Jul

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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