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.
- multiphoton processes
- frequency conversion
- nonlinear optical materials
Major, A., Hutchings, D., Langford, N., Ferguson, A. I., Aitchison, J. S., Smith, P. W. E., & Natural Sciences and Engineering Research Council (NSERC) in Canada (Funder) (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), 450-453. https://doi.org/10.1002/lapl.200910022