Wavelength resolved intracavity measurement of the cross sections of a Tm-doped fiber.
Identifieur interne : 001187 ( Main/Exploration ); précédent : 001186; suivant : 001188Wavelength resolved intracavity measurement of the cross sections of a Tm-doped fiber.
Auteurs : Martin Engelbrecht [Allemagne] ; Frithjof Haxsen ; Dieter Wandt ; Dietmar KrachtSource :
- Optics express [ 1094-4087 ] ; 2008.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Thulium.
- instrumentation : Fiber Optic Technology, Oscillometry.
- Equipment Design, Equipment Failure Analysis, Lasers, Radiometry.
Abstract
The wavelength dependent measurement of the relaxation oscillation frequency in a laser oscillator allows the study of the three- and four-level nature of the active material. Accordingly we present a tunable thulium doped fiber laser that covers the transition from three- to four-level operation at 2025 nm, characterized by the vanishing occupation of the terminal laser level. The laser is tunable from 1864 nm to 2075 nm with a linewidth below 0.3 nm. A maximum output power of 3.8 W at 1930 nm was achieved with a slope efficiency of 33.6% and an absorbed pump power of 17.5 W. Absorption and emission cross sections were derived over the tuning range by an intracavity measurement method.
PubMed: 18542239
Affiliations:
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Le document en format XML
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<term>Oscillometry (instrumentation)</term>
<term>Radiometry</term>
<term>Thulium (chemistry)</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Analyse de panne d'appareillage</term>
<term>Conception d'appareillage</term>
<term>Lasers</term>
<term>Oscillométrie (instrumentation)</term>
<term>Radiométrie</term>
<term>Technologie des fibres optiques (instrumentation)</term>
<term>Thulium ()</term>
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<keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Thulium</term>
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<term>Oscillometry</term>
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<front><div type="abstract" xml:lang="en">The wavelength dependent measurement of the relaxation oscillation frequency in a laser oscillator allows the study of the three- and four-level nature of the active material. Accordingly we present a tunable thulium doped fiber laser that covers the transition from three- to four-level operation at 2025 nm, characterized by the vanishing occupation of the terminal laser level. The laser is tunable from 1864 nm to 2075 nm with a linewidth below 0.3 nm. A maximum output power of 3.8 W at 1930 nm was achieved with a slope efficiency of 33.6% and an absorbed pump power of 17.5 W. Absorption and emission cross sections were derived over the tuning range by an intracavity measurement method.</div>
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