Issue |
EPJ Web of Conferences
Volume 48, 2013
OAM 2012 – Optics and Measurement International Conference
|
|
---|---|---|
Article Number | 00007 | |
Number of page(s) | 5 | |
DOI | https://doi.org/10.1051/epjconf/20134800007 | |
Published online | 03 May 2013 |
https://doi.org/10.1051/epjconf/20134800007
Preparation, properties and application of sapphire single-crystal fibers grown by the EFG method
1 CRYTUR, Palackého 175,
511 01
Turnov, Czech
Republic
2 Faculty of Nuclear Sciences and
Physical Engineering, Czech Technical University in Prague,
Bøehová 7, 115 19
Prague, Czech
Republic
Sapphire – the single crystal of aluminum oxide (Al2O3) – is one of the most important artificially produced materials. The sapphire fibres studied were grown in Crytur using the “edge-defined film-fed growth” (EFG) technique. Their unique physical and chemical properties can be employed in various applications. Due to their high refractive index and a broad transmission band spanning the ultraviolet, visible and infrared bands, sapphire fibres are perfect waveguides in harsh environments. The current major applications are Er:YAG laser beam delivery and pyrometric and spectrometric measurements in furnaces, combustion engines, etc. In this paper we summarize an adjustment of the EFG method to grow thin filaments by giving possible molybdenum die designs. We investigated the fibres using an optical microscope and measured their transmission of an Er:YAG laser beam (2.94 μm). The attenuation of the tested samples is approximately 0.1 dB/cm.
© Owned by the authors, published by EDP Sciences, 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.