Abstract
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 language | English |
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Pages (from-to) | 2732-2734 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 58 |
Issue number | 24 |
DOIs | |
Publication status | Published - 1991 Dec 1 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)