Observation of quadratic spatial solitons in periodically poled lithium niobate
- 15 October 1999
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 24 (20) , 1410-1412
- https://doi.org/10.1364/ol.24.001410
Abstract
We report what are to our knowledge the first observation and characterization of quadratic spatial solitons in periodically poled lithium niobate (PPLN). Using a Nd:YAG (1064-nm) source, we observed self-trapped solitary-wave propagation over more than six diffraction lengths as a result of the cascaded quadratic nonlinear process. Low-threshold operation (5-kW peak power) was measured for the quasi-phase-matched PPLN structure designed for frequency doubling.Keywords
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