Silica- and germanate-based rare earth doped glasses for fiber lasers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F18%3A00329259" target="_blank" >RIV/68407700:21340/18:00329259 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1117/12.2306263" target="_blank" >http://dx.doi.org/10.1117/12.2306263</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2306263" target="_blank" >10.1117/12.2306263</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Silica- and germanate-based rare earth doped glasses for fiber lasers

Popis výsledku v původním jazyce

Since an extension of spectral region from near-infrared to mid-infrared covered by fiber lasers belongs to ambitions of today’s research, germanate-based glasses have been proposed, fabricated and their optical properties studied. Glass samples were prepared by Modified Chemical Vapor Deposition method and by conventional glass melting processes. Fabricated preforms suitable for fiber drawing were optically characterized by refractive index and absorption spectra measurements. A limit of rare earths doping of GeO2-based glasses without phase separation was found comparable to SiO2-based glasses (thousands of ppm). Preforms prepared by Modified Chemical Vapor Deposition contained only up to 29 mol. % of GeO2 in core, although pure GeO2 glass layers were deposited. This effect caused transparency limitation of such materials to 2-2.5 μm. Implementing of effective drying processes during GeO2-based glass conventional melting lead to decrease of residual OHcontent to the level comparable with optical silica glass HOQ 310. The shift of infrared transmission edge of bulk GeO2-based conventionally prepared glasses to longer wavelengths towards to 5 μm was observed. These facts support the idea of potential use of GeO2-based glass matrices for fiber lasers operating in mid-infrared region

Název v anglickém jazyce

Silica- and germanate-based rare earth doped glasses for fiber lasers

Popis výsledku anglicky

Since an extension of spectral region from near-infrared to mid-infrared covered by fiber lasers belongs to ambitions of today’s research, germanate-based glasses have been proposed, fabricated and their optical properties studied. Glass samples were prepared by Modified Chemical Vapor Deposition method and by conventional glass melting processes. Fabricated preforms suitable for fiber drawing were optically characterized by refractive index and absorption spectra measurements. A limit of rare earths doping of GeO2-based glasses without phase separation was found comparable to SiO2-based glasses (thousands of ppm). Preforms prepared by Modified Chemical Vapor Deposition contained only up to 29 mol. % of GeO2 in core, although pure GeO2 glass layers were deposited. This effect caused transparency limitation of such materials to 2-2.5 μm. Implementing of effective drying processes during GeO2-based glass conventional melting lead to decrease of residual OHcontent to the level comparable with optical silica glass HOQ 310. The shift of infrared transmission edge of bulk GeO2-based conventionally prepared glasses to longer wavelengths towards to 5 μm was observed. These facts support the idea of potential use of GeO2-based glass matrices for fiber lasers operating in mid-infrared region

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proc. SPIE 10683, Fiber Lasers and Glass Photonics: Materials through Applications

ISBN

978-1-5106-1893-0

ISSN

0277-786X

e-ISSN

1996-756X

Počet stran výsledku

5

Strana od-do

—

Název nakladatele

SPIE

Místo vydání

Baltimore

Místo konání akce

Strasbourg

Datum konání akce

22. 4. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000450857500052