Characterization of Yb:YAG active slab media based on a layered structure with different doping

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F13%3A43896610" target="_blank" >RIV/60461373:22310/13:43896610 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1117/12.2017380" target="_blank" >http://dx.doi.org/10.1117/12.2017380</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2017380" target="_blank" >10.1117/12.2017380</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of Yb:YAG active slab media based on a layered structure with different doping

Popis výsledku v původním jazyce

Slabs with non-uniform doping distribution are studied with the aim of reducing thermal deformations in high-energy high-average-power Yb:YAG slab systems. We present a numerical analysis based on Finite Element Mesh (FEM) methods suitable to model non-uniform devices. The thermal variation of the refractive index, the end-faces deformations and the photo-elastic effect have been calculated in order to estimate the total thermal-lens effect. The stress distributions are also obtained. Some results of this numerical approach are compared to experimental thermal lens measurements in a simple geometry for both uniform and structured samples, in order to validate the numerical procedures. Finally we compare numerical simulations for different single- or double-sided pumping and cooling geometries. They show that structured slabs can reduce thermal gradients with respect to uniformly doped means with comparable absorption and geometry. This means a reduction of thermal lens effect and thus

Název v anglickém jazyce

Characterization of Yb:YAG active slab media based on a layered structure with different doping

Popis výsledku anglicky

Slabs with non-uniform doping distribution are studied with the aim of reducing thermal deformations in high-energy high-average-power Yb:YAG slab systems. We present a numerical analysis based on Finite Element Mesh (FEM) methods suitable to model non-uniform devices. The thermal variation of the refractive index, the end-faces deformations and the photo-elastic effect have been calculated in order to estimate the total thermal-lens effect. The stress distributions are also obtained. Some results of this numerical approach are compared to experimental thermal lens measurements in a simple geometry for both uniform and structured samples, in order to validate the numerical procedures. Finally we compare numerical simulations for different single- or double-sided pumping and cooling geometries. They show that structured slabs can reduce thermal gradients with respect to uniformly doped means with comparable absorption and geometry. This means a reduction of thermal lens effect and thus

Druh

D - Stať ve sborníku

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

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Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název statě ve sborníku

SPIE Proceedings

ISBN

978-0-8194-9582-2

ISSN

0277-786X

e-ISSN

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Počet stran výsledku

12

Strana od-do

"87800J-1"-"87800J-12"

Název nakladatele

SPIE Society of Photo-Optical Instrumentation Engineers

Místo vydání

Washington

Místo konání akce

Prague

Datum konání akce

15. 4. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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