The effective optical nonlinearity n2 of a Ce-doped KNSBN crystal is measured by using the Z-scan method. The dependence of n2 on the illumination wavelength and polarization is characterized. An optical limiter for strong cw illumination is demonstrated, based on self-focusing and spatial self-phase-modulation.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- General Engineering