Periodic poling of Rb-doped KTiOPO 4 by coercive field engineering.

Autor: Liljestrand C, Laurell F, Canalias C
Jazyk: angličtina
Zdroj: Optics express [Opt Express] 2016 Jun 27; Vol. 24 (13), pp. 14682-9.
DOI: 10.1364/OE.24.014682
Abstrakt: We demonstrate fine-pitch periodic poling of bulk Rb-doped KTiOPO 4 using a coercive field grating induced by ion-exchange. These samples were used for quasi phase matched (QPM) second harmonic generation at 795 nm with a normalized conversion efficiency of 1.7% W -1 cm -1 . Additionally, the ion-exchange introduced a refractive index change over the sample thickness resulting in a phasematching wavelength shift of 0.21 nm, adding extra tunability to the QPM device.
Databáze: MEDLINE