10-W-level diode-pumped compact 2.78 μm ZBLAN fiber laser

Xiushan Zhu, Ravi Jain

Research output: Contribution to journalArticle

163 Citations (Scopus)

Abstract

We report on >9 W transverse-fundamental-mode CW output near 3 μm from a 4 m heavily erbium-doped ZBLAN double-clad fiber laser pumped by a collimated 100 W 975 nm laser diode array. The pump threshold of the fiber laser was about 1 W, and the slope efficiency was 21.3%. The peak wavelength of free running was about 2708 nm at low pump power and moved to around 2785 nm at high pump power. Output of 9 W was obtained when the launched pump power was 42.8 W. The output, however, fluctuated intensively like a pulsed laser, and the operation broke down with optical damage of the pumping end facet when the pump was increased beyond 42.8 W. Therefore, alleviation of the operation fluctuation, heat management, and strengthening the pumping fiber are crucial considerations for the stable operation of 10-W-level mid-IR ZBLAN fiber lasers.

Original languageEnglish (US)
Pages (from-to)26-28
Number of pages3
JournalOptics Letters
Volume32
Issue number1
DOIs
StatePublished - Jan 1 2007
Externally publishedYes

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fiber lasers
diodes
pumps
output
pumping
infrared lasers
erbium
flat surfaces
pulsed lasers
breakdown
semiconductor lasers
slopes
damage
heat
fibers
thresholds
wavelengths

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

10-W-level diode-pumped compact 2.78 μm ZBLAN fiber laser. / Zhu, Xiushan; Jain, Ravi.

In: Optics Letters, Vol. 32, No. 1, 01.01.2007, p. 26-28.

Research output: Contribution to journalArticle

Zhu, Xiushan ; Jain, Ravi. / 10-W-level diode-pumped compact 2.78 μm ZBLAN fiber laser. In: Optics Letters. 2007 ; Vol. 32, No. 1. pp. 26-28.
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