Monoclinic RbPb2Cl5:Dy single crystal was tested for femtosecond laser writing at wavelength of 800nm. Dependence of permanent refractive index change upon input pulse energy was investigated. Non-linear coefficients of multiphoton absorption and self-focusing were measured. Kerr non-linear coefficient was found to be as high as 4.0*10-6 cm2/GW.
Bibliographical noteCopyright: 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND.
Funding: Leverhulme Trust VP1-2011-025.
- femtosecond modification of refractive index
- multiphoton absorption
- Z-scan measurement