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Periodic domain inversion and generation of blue light in lithium tantalate waveguides

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3 Author(s)
Ahlfeldt, H. ; Inst. of Opt. Res., Stockholm, Sweden ; Webjorn, J. ; Arvidsson, Gunnar

Generation of blue light from small solid-state light sources is a technological challenge with applications in many areas, among others optical data storage. The authors report frequency doubling using third-order quasi-phase matching in periodically domain-inverted lithium tantalate waveguides. Periodic proton exchange followed by heat treatment caused periodic domain inversion and waveguide formation in a single step. Infrared radiation from a dye laser was coupled through the waveguides and second-harmonic generation corresponding to third-order quasi-phase-matching was observed.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:3 ,  Issue: 7 )