1 October 1991 Nonlinear optic frequency converters with lowered sensibility to spectral width of laser radiation
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Abstract
The method of compensation for the angular dispersion of phase-matching is developed theoretically and experimentally for a collinear but basically nonmonochromatic pump radiation. According to this method the converter's sensibility to nonmonochromatic radiation is lowered considerably. The method is based on a preliminary modification of the pump beam by passing it through a medium with an angular dispersion close to the phase-matching dispersion. When this compensation method is used, the intensity of the second harmonic can be increased by an order of magnitude or more. Illustrative numerical calculation are made for KDP and LiIO3 crystals. It is shown that the method can suppress successfully the influence of fluctuations of the pump frequency on the second-harmonic intensity. The method was tested experimentally by generation the second harmonic of neodymium laser radiation (spectral width 8 nm) by OO-E interaction. An increase in the integrated intensity of the second harmonic by an order of magnitude was achieved.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Vladimir D. Volosov, Vladimir D. Volosov, } "Nonlinear optic frequency converters with lowered sensibility to spectral width of laser radiation", Proc. SPIE 1500, Innovative Optics and Phase Conjugate Optics, (1 October 1991); doi: 10.1117/12.46853; https://doi.org/10.1117/12.46853
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