| Issue |
EPJ Web Conf.
Volume 335, 2025
EOS Annual Meeting (EOSAM 2025)
|
|
|---|---|---|
| Article Number | 08008 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting - Optical Materials | |
| DOI | https://doi.org/10.1051/epjconf/202533508008 | |
| Published online | 22 September 2025 | |
https://doi.org/10.1051/epjconf/202533508008
High-temperature diffusion doping of thin-film lithium niobate
Faculty of Electrical Engineering, Helmut Schmidt University, 22043 Hamburg, Germany
Published online: 22 September 2025
Abstract
Surface-doping of lithium niobate wafers with rare earth or optically damage-resistant ions by physical vapour deposition and high-temperature in-diffusion is a cost-efficient and flexible method for the fabrication of thin-film LN or LNOI with dopants which are not common in crystal growth. LNOI doped with Er, Yb, Tm, Pr, Zn and Zr have been fabricated with different concentrations. As an example, the fluorescence spectra of Er:Yb:LNOI samples were recorded, and a small-signal net gain of 3.7 dB/cm was measured in ridge waveguides.
© The Authors, published by EDP Sciences, 2025
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