Abstract
The type-II phase-matched third-harmonic light generation in a β-BaB2O4 crystal is studied experimentally. A passively mode-locked Nd: phosphate glass laser is used as a pump source. At a pump pulse peak intensity ofI 10=5×1010W/cm2 a third-harmonic conversion efficiency of a percent is obtained. A theoretical discussion of phase-matched third-harmonic generation in crystals of the symmetry group of β-BaB2O4 (trigonal class 3) is given. The effective nonlinear susceptibility ϰeff for type-II phase-matching is determined.
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On leave from the Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, Shanghai, P.R. China
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Qiu, P., Penzkofer, A. Picosecond third-harmonic light generation inβ-BaB2O4 . Appl. Phys. B 45, 225–236 (1988). https://doi.org/10.1007/BF00687150
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DOI: https://doi.org/10.1007/BF00687150