Title :
Photodarkening of 488nm-pumped Sm3+-doped germanosilicate fiber laser
Author :
Cheng, Yu ; Oton, Claudio J. ; Boyland, A.J. ; Sahu, Jayanta ; Brocklesby, Bill ; Loh, Wei H.
Author_Institution :
Optoelectron. Res. Centre, Univ. of Southampton, Southampton, UK
Abstract :
Photodarkening in samarium doped germanosilicate fiber and laser by downconversion is studied. Appreciable photodarkening occurs in the fiber and we attribute the effect to color centres which are both related to Sm2O3 and GeO2. An energy level scheme has been illustrated to explain the photodarkening mechanism.
Keywords :
colour centre lasers; fibre lasers; photochromism; samarium; color centre; germanosilicate fiber laser; photodarkening; Absorption; Energy states; Fiber lasers; Glass; Laser excitation; Photochromism; Power generation; Power lasers; Pump lasers; Samarium; Photodarkening; color centre; fiber laser; samarium;
Conference_Titel :
Lasers & Electro Optics & The Pacific Rim Conference on Lasers and Electro-Optics, 2009. CLEO/PACIFIC RIM '09. Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-3829-7
Electronic_ISBN :
978-1-4244-3830-3
DOI :
10.1109/CLEOPR.2009.5292227