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

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. Pe...

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Bibliographic Details
Published in:IEEE photonics technology letters 1991-07, Vol.3 (7), p.638-639
Main Authors: Ahlfeldt, H., Webjorn, J., Arvidsson, G.
Format: Article
Language:English
Subjects:
Frequency
Heat treatment
Light sources
Lithium compounds
Memory
Optical harmonic generation
Optical waveguides
Protons
Solid state circuits
Waveguide lasers
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Summary: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.< >
ISSN:1041-1135
1941-0174
DOI:10.1109/68.87938