Photorefractive effect in iron-doped lithium niobate crystals induced by femtosecond pulses of 1.5 μm wavelength

摘要

Illumination of iron-doped lithium crystals (LiNbO_3:Fe) with femtosecond pulses of 1.5 μm wavelength results in large refractive index changes Δn in the order of 10~(-3). The sign of the refractive index changes depends on the polarization of the recording light. The results can be very useful for fabrication of tailored holographic components for telecommunication.