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Ultrafast generation of blue light by efficient second-harmonic generation in periodically-poled bulk and waveguide potassium titanyl phosphate

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6 Author(s)
Wang, Y. ; Department of Physics and Astronomy, Centers for Materials & Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403 ; Petrov, V. ; Ding, Y.J. ; Zheng, Y.
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We have investigated second-harmonic generation in short-period periodically-poled bulk and waveguide potassium titanyl phosphate crystals to generate blue light using subpicosecond laser pulses. For the bulk, the highest conversion efficiency is ≈5.5%, which is about two orders of magnitude larger than that achieved previously. For the waveguide, the highest conversion efficiency is ≈32%, which is about a factor of 4 higher than that obtained before. These measured values are in good agreement with our theoretical results. We have observed saturation of conversion efficiency, which sets a limit to the maximum efficiency that can be achieved. © 1998 American Institute of Physics.

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Applied Physics Letters  (Volume:73 ,  Issue: 7 )