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Two-photon absorption properties of crystalline knbo3 at 430 nm and efficient high pulse energy blue second-harmonic generation

Major, A. and Hutchings, D. and Langford, N. and Ferguson, A.I. and Aitchison, J.S. and Smith, P.W.E. (2009) Two-photon absorption properties of crystalline knbo3 at 430 nm and efficient high pulse energy blue second-harmonic generation. Laser Physics Letters, 6 (6). pp. 450-453. ISSN 1612-2011

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Abstract

We report on z-scan characterization of the two-photon absorption properties of crystalline potassium niobate at 430 nm. The value of the two-photon absorption coefficient was found to be similar to 4.3 cm/GW. Furthermore, we demonstrate efficient (> 60%) noncritically-phase-matched second harmonic generation at 430 nm with subpicosecond pump pulses.