Optical damage resistant zirconium-diffused lithium tantalate ridge waveguides
Publication date
2024-09-26
Document type
Forschungsartikel
Author
Organisational unit
Publisher
Optica Publishing Group
Series or journal
Optical Materials Express
ISSN
Periodical volume
14
Periodical issue
10
First page
2451
Last page
2460
Part of the university bibliography
✅
Language
English
Abstract
We report on the study of high-temperature zirconium in-diffusion in congruent z-cut lithium tantalate crystals. Zirconium (Zr) concentration profiles in samples prepared at different diffusion times and temperatures were investigated using secondary neutral mass spectrometry. From the diffusion profiles specific diffusion constant and activation energy were obtained. Zr-induced near-surface refractive index changes were extracted by means of prism-coupler measurements, and their correlation with Zr concentration was studied. Subsequently, low-loss optical ridge waveguides were diced and their resistance to photorefractive optical damage in the blue (405 nm) and green (532 nm) spectral ranges was measured, demonstrating damage thresholds in the multi-MW/cm^2 range.
Description
This is an open access article under of the Optica Open Access Publishing Agreement (https://doi.org/10.1364/OA_License_v2#VOR-OA).
Version
Published version
Access right on openHSU
Metadata only access