Temperature and wavelength tuning of second-, third-, and fourth-harmonic generation in a two-dimensional hexagonally poled nonlinear crystal
Neil G. R. BroderickOptoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UKR.T. BratfaleanOptoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UKTanya M. MonroOptoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UKDavid J. RichardsonOptoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UKC. Martijn de SterkeSchool of Physics, University of Sydney, Sydney, NSW, Australia
2002en
ABI
Аннотация
Using high-power nanosecond pulses, we measured the second-harmonic conversion efficiency of two-dimensional hexagonally poled lithium niobate as a function of temperature and wavelength. These results were compared with theoretical estimates and with measurements in one-dimensional periodically poled lithium niobate. We found that for a substantial range of parameters a two-dimensional noncollinear interaction has a broader tuning response than a one-dimensional collinear interaction. We also observed and characterized third- and fourth-harmonic generation processes in the same crystal.
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