Photodegradation of near-infrared-pumped Tm{sup 3+}-doped ZBLAN fiber upconversion lasers

Journal Article · Fri Mar 01 04:00:00 EST 1996 · Optics Letters

DOI:https://doi.org/10.1364/OL.21.000348· OSTI ID:434634

Booth, I J; Archambault, J; Ventrudo, B F ^[1]

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1. SDL Optics, Inc., 6703 Rajpur Place, Saanichton, British Columbia V8M 1Z5 (Canada)

Photodegradation has been observed in Tm{sup 3+}-doped ZBLAN fiber lasers pumped with laser diodes at 1135 nm. After upconversion lasing at 482 nm, the fiber develops color centers that absorb strongly at wavelengths below {approximately}650 nm, affecting further upconversion lasing. The rate of damage formation is strongly dependent on the pump power level and on the thulium concentration. The color centers are bleached by intense blue light but recover with thermal excitation and can be removed by thermal annealing at temperature near 100{degree}C. {copyright} {ital 1996 Optical Society of America.}

• Sponsoring Organization: USDOE
• OSTI ID: 434634
• Journal Information: Optics Letters, Journal Name: Optics Letters Journal Issue: 5 Vol. 21; ISSN 0146-9592; ISSN OPLEDP
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ABSORPTION SPECTRA
DESIGN
MILLIWATT POWER RANGE
PERFORMANCE
RING LASERS
THULIUM ADDITIONS
VISIBLE RADIATION