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Production of defects in ZBLAN, ZBLAN:Tm3+ and ZBLAN:Cr3+ glasses by ultra-short pulses laser interaction

Identifieur interne : 001358 ( Main/Exploration ); précédent : 001357; suivant : 001359

Production of defects in ZBLAN, ZBLAN:Tm3+ and ZBLAN:Cr3+ glasses by ultra-short pulses laser interaction

Auteurs : Lilia C. Courrol [Brésil] ; Younes Messaddeq [Brésil] ; Sandra H. Messaddeq [Brésil] ; Sidney J. L. Ribeiro [Brésil] ; Ricardo E. Samad [Brésil] ; Anderson Z. De Freitas [Brésil] ; Nilson D. Jr Vieira [Brésil]

Source :

RBID : Pascal:08-0105612

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English descriptors

Abstract

In this work we have studied pure and thulium- and chromium-doped ZBLAN glasses irradiated by ultra-short laser pulses. A Ti:sapphire CPA system was used, producing a 500 Hz train of pulses, centered at 830 nm, with 375 μJ of energy and 50 fs of duration (FWHM). The beam was focused by a 20mm lens, producing a converging beam with a waist of 12 μm. The absorption spectra before and after laser irradiation were obtained showing production of color centers in pure, thulium-doped and chromium-doped ZBLAN glasses. A damage threshold of 9.56 TW/cm2 was determined for ZBLAN.


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Le document en format XML

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glasses by ultra-short pulses laser interaction</title>
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<term>Absorption spectra</term>
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<term>Damage</term>
<term>Defect formation</term>
<term>Doping</term>
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<term>Laser pulse</term>
<term>Optical properties</term>
<term>Radiation effects</term>
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<term>Formation défaut</term>
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<term>Effet rayonnement</term>
<term>Spectre absorption</term>
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<term>Verre fluorure</term>
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<div type="abstract" xml:lang="en">In this work we have studied pure and thulium- and chromium-doped ZBLAN glasses irradiated by ultra-short laser pulses. A Ti:sapphire CPA system was used, producing a 500 Hz train of pulses, centered at 830 nm, with 375 μJ of energy and 50 fs of duration (FWHM). The beam was focused by a 20mm lens, producing a converging beam with a waist of 12 μm. The absorption spectra before and after laser irradiation were obtained showing production of color centers in pure, thulium-doped and chromium-doped ZBLAN glasses. A damage threshold of 9.56 TW/cm
<sup>2</sup>
was determined for ZBLAN.</div>
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