Photodarkening as a heat source in ytterbium doped fiber amplifiers

Šušnjar, Peter (avtor), Agrež, Vid (avtor), Petkovšek, Rok (avtor)

Theoretical and experimental evaluation of the photodarkening effect as a heat source in ytterbium doped fibers is presented. An additional non-radiative decay channel that opens after photodarkening the fiber is identified via fluorescence lifetime reduction and as an additional heat source proportional to inversion. It is included in the heat source model which was tested on a core-pumped fiber amplifiers. High temperature elevation at low pump powers shows potential heat-related problems in high inversion systems that are more susceptible to photodarkening.

• Jezik: Angleški jezik
• Ključne besede: fiber lasers, photodarkening, ytterbium fibers, fiber characterization, thermal effects
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2018
• Št. strani: Str. 6420-6426
• Številčenje: Vol. 26, no. 5, art. 314114
• PID: 20.500.12556/RUL-105145
• UDK: 535(045)
• ISSN pri članku: 1094-4087
• DOI: 10.1364/OE.26.006420
• COBISS.SI-ID: 15925531

Avtorske pravice

V članku navedeno: "© 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement"; s povezavo https://www.osapublishing.org/library/license_v1.cfm (26. 3. 2021).

• Datum objave v RUL: 29.10.2018

Gradivo je del revije

• Naslov: Optics express
• Skrajšan naslov: Opt. express
• Založnik: Optica
• ISSN: 1094-4087
• COBISS.SI-ID: 8636438

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: vlakenski laserji, foto potemnenje, iterbijeva vlakna, karakterizacija vlaken, toplotni učinki