Second-harmonic generation of green light in periodically poled stoichiometric LiTaO{sub 3} doped with MgO

Periodically poled crystals of stoichiometric lithium tantalate doped with MgO (PP-Mg:SLT) were developed for a high-power optical frequency conversion. Inverted domain structures with 7.7 {mu}m period were fabricated in 1-mm-thick crystals by an electric-field poling using patterned metallic electr...

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Bibliographic Details
Published in:Journal of applied physics 2004-12, Vol.96 (12)
Main Authors: Bruner, Ariel, Eger, David, Ruschin, Shlomo, Department of Electrical Engineering-Physical Electronics, Tel Aviv University, Tel Aviv 69978
Format: Article
Language:English
Subjects:
DIELECTRIC MATERIALS
DOPED MATERIALS
ELECTRIC FIELDS
ELECTRODES
HARMONIC GENERATION
LITHIUM COMPOUNDS
MAGNESIUM OXIDES
MATERIALS SCIENCE
MORPHOLOGY
NEODYMIUM LASERS
PERIODICITY
POLARIZATION
STOICHIOMETRY
SURFACES
TANTALATES
VISIBLE RADIATION
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Summary:Periodically poled crystals of stoichiometric lithium tantalate doped with MgO (PP-Mg:SLT) were developed for a high-power optical frequency conversion. Inverted domain structures with 7.7 {mu}m period were fabricated in 1-mm-thick crystals by an electric-field poling using patterned metallic electrodes. Frequency-doubling characteristics of these units were investigated with continuous and pulsed Nd:YAG lasers. The nonlinear coefficient, d{sub 33}, of Mg:SLT derived from these measurements is 13 pm/V, similar to that of the congruent lithium tantalate. A stable generation of 5.5 W average power of green light at 532 nm was obtained while the photoinduced breakdown of the periodically poled KTiOPO{sub 4} was observed under similar experimental conditions. These results demonstrate the advantage of Mg:SLT for high-average-power applications.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1804616