Extruded tellurite antiresonant hollow core fiber for Mid-IR operation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F20%3A39916224" target="_blank" >RIV/00216275:25310/20:39916224 - isvavai.cz</a>
Result on the web
<a href="https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-28-11-16542" target="_blank" >https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-28-11-16542</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1364/OE.390517" target="_blank" >10.1364/OE.390517</a>

Result language
angličtina
Original language name
Extruded tellurite antiresonant hollow core fiber for Mid-IR operation
Original language description
We report the first extruded tellurite antiresonant hollow core fibers (HC-ARFs) aimed at the delivery of mid-infrared (Mid-IR) laser radiation. The preform extrusion fabrication process allowed us to obtain preforms with non-touching capillaries in a single step, hence minimizing thermal cycles. The fibers were fabricated from in-house synthetized tellurite glass (containing Zn, Ba and K oxides) and co-drawn with a fluorinated ethylene propylene (FEP) polymer outer layer to improve their mechanical properties and protect the glass from humidity. The fabricated HC-ARFs transmit in the Mid-IR spectral range from 4.9 to 6 mu m. We measured losses of similar to 8.2, 4.8 and 6.4 dB/m at 5 mu m, 5.6 gm and 5.8 mu m, respectively in two different fibers. These losses, which are dominated by leakage mostly arising from a non-uniform membrane thickness, represent the lowest attenuation reported for a tellurite-based HC-ARF to date. The fibers present good beam quality and an M^2 factor of 1.2. Modelling suggests that by improving the uniformity in the capillary membrane thickness losses down to 0.05 dB/m at 5.4 gm should be possible, making this solution attractive, fbr example, for beam delivery from a CO laser.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)

Project
<a href="/en/project/LM2015082" target="_blank" >LM2015082: Center of Materials and Nanotechnologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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