Liquid-Phase Epitaxial Growth and Characterization of Nd:YAl3(BO3)4 Optical Waveguides

Abstract

We investigated the fabrication of neodymium doped thin film optical waveguide-based devices as potential active sources for planar integrated optics. Liquid-phase epitaxial growth was used to fabricate neodymium-doped yttrium aluminum borate films on compatible lattice-matched, un-doped yttrium aluminum borate substrates. We observed the refractive index contrast of the doped and un-doped crystal layers via differential interference contrast microscopy. In addition, characterization by X-ray powder diffraction, optical absorption and luminescence spectra demonstrated the crystal quality, uniformity and optical guiding of the resulting thin films.

Structural, Electronic and Vibrational Properties of YAl3(BO3)4

“…The structural characterization of YAl 3 (BO3) 4 host lattice is mainly related to X-ray diffraction [25,[35][36][37]. The main purpose of this study is to study vibrational spectra of YAB and reveal or exclude a possible portion existence of the monoclinic (C2/c) phase in trigonal (R32) YAl 3 (BO 3 ) 4 lattice.…”