Second-harmonic generation of blue light in a LiTaO3 waveguide

Kiminori Mizuuchi, Kazuhisa Yamamoto, Tetsuo Taniuchi

Research output: Contribution to journalArticlepeer-review

100 Citations (Scopus)


We report blue light generation in a LiTaO3 waveguide by quasi-phase-matched (QPM) second-harmonic generation (SHG). A periodically domain-inverted structure for QPM is fabricated in LiTaO3 by proton exchange of a selective Ta-masked area using pyrophosphoric acid followed by heat treatment. By utilizing this structure and low-loss proton-exhanged waveguides, we have realized a third-order QPM-SHG device. As a result, 0.13 mW of harmonic blue light was generated for a conversion efficiency of 18%/W.

Original languageEnglish
Pages (from-to)2732-2734
Number of pages3
JournalApplied Physics Letters
Issue number24
Publication statusPublished - 1991

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


Dive into the research topics of 'Second-harmonic generation of blue light in a LiTaO3 waveguide'. Together they form a unique fingerprint.

Cite this