Delayed release of Li atoms from laser ablated lithium niobate

Li K-Edge XANES Spectra of Lithium Niobate and Lithium Tantalite

The x-ray emission with the single crystal of lithium niobate (LiNbO3) or lithium tantalite (LiTaO3) by thermal changes in a vacuum system is closely concerned with the electronic state of each crystal. Therefore, lithium Kedge x-ray absorption near edge structures (XANES) spectra of these materials were measured in the region from 50 eV to 90 eV by means of total electron yield method (T.E.Y.)...

Direct Laser Writing: Versatile Tool for Microfabrication of Lithium Niobate

We demonstrate versatility of femtosecond direct laser writing (DLW) technique for microstructuring of iron-doped and as-grown lithium niobate crystals. Formation of extended, metastable, and re-writable refractive index modulation structures is achievable via fast local photorefractive modification of refractive index at the focus of the writing laser beam, with a modulation of up to ∆n ~ 10, ...

Sub-band-gap laser micromachining of lithium niobate

Calligraphic poling of Lithium Niobate.

We demonstrate a novel technique for instituting complex and arbitrary shaped micron-scale domain patterns in LiNbO3 at room temperature. Fabrication of continuous domains as narrow as 2 microm across and hexagonal patterns of the same order accompanied by real time visualization of the poling process are presented.

Natural focusing of x rays from ferroelectric lithium niobate wafers