Efficient 2.96 micron dysprosium-doped ZBLAN fibre laser pumped at 1.3 micron

Yuen H. Tsang, Atalla E. El-Taher, Terence A. King, Kuang Po Chang, Stuart D. Jackson

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

Abstract

Wavelengths around 1.15 μm, 1.3 μm and 1.7 μm can be used to pump Dy-doped ZBLAN fibre in order to generate ∼3 μm with high efficiency. Previously the generation of 2.9 μm from the Dy-ZBLAN fibre was demonstrated by pumping with 1.1 μm Yb-silica fibre laser sources. The laser slope efficiency and lasing threshold demonstrated was about ∼5% and ∼1.78 W. In this investigation, the longer wavelength absorption band (6H 9/2, 6F11/2) centred at 1.3 μm of Dy 3+-doped ZBLAN is utilised and the lasing transition around ∼3 μm takes places from 6H13/26H 15/2. With this pumping scheme the Stokes' efficiency is expected to be up to ∼45%. A quasi-continuous wave Dy3+-ZBLAN fibre laser pumped by a ∼1.3 μm Nd:YAG laser and operating at 2.96 μm with a bandwidth (FWHM) of ∼14 nm has been demonstrated. For a 60cm fibre length, a threshold of 0.5W and a slope efficiency of ∼20% with respect to the absorbed pump power was observed. The overall pump absorption in the fibre was around 84%. The cavity reflectivities at 2.9 μm were 99% and 50%. The demonstrated slope efficiency was 45% of the Stokes' limit. The slope efficiency was around four times higher and the threshold around 3.6 times lower than the previous performance demonstrated by using the 1.1 μm Yb fibre laser pumping scheme. The higher performance achieved compared to the 1.1 μm pump scheme is due to the higher Stokes' limit, lower pump ESA losses and higher cavity reflectivity. About 590 cm-1 Raman Stokes shift has also detected by using 514.5 nm and 488 nm Ar ion laser as excitation pump sources.

LanguageEnglish
Title of host publicationSolid State Lasers and Amplifiers II
Place of PublicationWashington, DC
PublisherSPIE
Pages1-10
Number of pages10
Volume6190
ISBN (Print)0819462462, 9780819462466
DOIs
Publication statusPublished - 2006
Externally publishedYes
EventSolid State Lasers and Amplifiers II - Strasbourg, France
Duration: 5 Apr 20066 Apr 2006

Other

OtherSolid State Lasers and Amplifiers II
CountryFrance
CityStrasbourg
Period5/04/066/04/06

Fingerprint

Dysprosium
dysprosium
Fiber lasers
fiber lasers
Pumps
pumps
slopes
Pumping (laser)
fibers
Fibers
thresholds
lasing
Lasers
pumping
reflectance
Wavelength
cavities
laser pumping
Full width at half maximum
European Space Agency

Keywords

  • Dy
  • Dysprosium
  • Fiber / fibre laser
  • Fluoride
  • Infrared
  • Raman scattering
  • ZBLAN

Cite this

Tsang, Y. H., El-Taher, A. E., King, T. A., Chang, K. P., & Jackson, S. D. (2006). Efficient 2.96 micron dysprosium-doped ZBLAN fibre laser pumped at 1.3 micron. In Solid State Lasers and Amplifiers II (Vol. 6190, pp. 1-10). [61900J] Washington, DC: SPIE. https://doi.org/10.1117/12.666892
Tsang, Yuen H. ; El-Taher, Atalla E. ; King, Terence A. ; Chang, Kuang Po ; Jackson, Stuart D. / Efficient 2.96 micron dysprosium-doped ZBLAN fibre laser pumped at 1.3 micron. Solid State Lasers and Amplifiers II. Vol. 6190 Washington, DC : SPIE, 2006. pp. 1-10
@inproceedings{897904b42b914cf08e78cb523d17e37d,
title = "Efficient 2.96 micron dysprosium-doped ZBLAN fibre laser pumped at 1.3 micron",
abstract = "Wavelengths around 1.15 μm, 1.3 μm and 1.7 μm can be used to pump Dy-doped ZBLAN fibre in order to generate ∼3 μm with high efficiency. Previously the generation of 2.9 μm from the Dy-ZBLAN fibre was demonstrated by pumping with 1.1 μm Yb-silica fibre laser sources. The laser slope efficiency and lasing threshold demonstrated was about ∼5{\%} and ∼1.78 W. In this investigation, the longer wavelength absorption band (6H 9/2, 6F11/2) centred at 1.3 μm of Dy 3+-doped ZBLAN is utilised and the lasing transition around ∼3 μm takes places from 6H13/2 → 6H 15/2. With this pumping scheme the Stokes' efficiency is expected to be up to ∼45{\%}. A quasi-continuous wave Dy3+-ZBLAN fibre laser pumped by a ∼1.3 μm Nd:YAG laser and operating at 2.96 μm with a bandwidth (FWHM) of ∼14 nm has been demonstrated. For a 60cm fibre length, a threshold of 0.5W and a slope efficiency of ∼20{\%} with respect to the absorbed pump power was observed. The overall pump absorption in the fibre was around 84{\%}. The cavity reflectivities at 2.9 μm were 99{\%} and 50{\%}. The demonstrated slope efficiency was 45{\%} of the Stokes' limit. The slope efficiency was around four times higher and the threshold around 3.6 times lower than the previous performance demonstrated by using the 1.1 μm Yb fibre laser pumping scheme. The higher performance achieved compared to the 1.1 μm pump scheme is due to the higher Stokes' limit, lower pump ESA losses and higher cavity reflectivity. About 590 cm-1 Raman Stokes shift has also detected by using 514.5 nm and 488 nm Ar ion laser as excitation pump sources.",
keywords = "Dy, Dysprosium, Fiber / fibre laser, Fluoride, Infrared, Raman scattering, ZBLAN",
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Tsang, YH, El-Taher, AE, King, TA, Chang, KP & Jackson, SD 2006, Efficient 2.96 micron dysprosium-doped ZBLAN fibre laser pumped at 1.3 micron. in Solid State Lasers and Amplifiers II. vol. 6190, 61900J, SPIE, Washington, DC, pp. 1-10, Solid State Lasers and Amplifiers II, Strasbourg, France, 5/04/06. https://doi.org/10.1117/12.666892

Efficient 2.96 micron dysprosium-doped ZBLAN fibre laser pumped at 1.3 micron. / Tsang, Yuen H.; El-Taher, Atalla E.; King, Terence A.; Chang, Kuang Po; Jackson, Stuart D.

Solid State Lasers and Amplifiers II. Vol. 6190 Washington, DC : SPIE, 2006. p. 1-10 61900J.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

TY - GEN

T1 - Efficient 2.96 micron dysprosium-doped ZBLAN fibre laser pumped at 1.3 micron

AU - Tsang, Yuen H.

AU - El-Taher, Atalla E.

AU - King, Terence A.

AU - Chang, Kuang Po

AU - Jackson, Stuart D.

PY - 2006

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N2 - Wavelengths around 1.15 μm, 1.3 μm and 1.7 μm can be used to pump Dy-doped ZBLAN fibre in order to generate ∼3 μm with high efficiency. Previously the generation of 2.9 μm from the Dy-ZBLAN fibre was demonstrated by pumping with 1.1 μm Yb-silica fibre laser sources. The laser slope efficiency and lasing threshold demonstrated was about ∼5% and ∼1.78 W. In this investigation, the longer wavelength absorption band (6H 9/2, 6F11/2) centred at 1.3 μm of Dy 3+-doped ZBLAN is utilised and the lasing transition around ∼3 μm takes places from 6H13/2 → 6H 15/2. With this pumping scheme the Stokes' efficiency is expected to be up to ∼45%. A quasi-continuous wave Dy3+-ZBLAN fibre laser pumped by a ∼1.3 μm Nd:YAG laser and operating at 2.96 μm with a bandwidth (FWHM) of ∼14 nm has been demonstrated. For a 60cm fibre length, a threshold of 0.5W and a slope efficiency of ∼20% with respect to the absorbed pump power was observed. The overall pump absorption in the fibre was around 84%. The cavity reflectivities at 2.9 μm were 99% and 50%. The demonstrated slope efficiency was 45% of the Stokes' limit. The slope efficiency was around four times higher and the threshold around 3.6 times lower than the previous performance demonstrated by using the 1.1 μm Yb fibre laser pumping scheme. The higher performance achieved compared to the 1.1 μm pump scheme is due to the higher Stokes' limit, lower pump ESA losses and higher cavity reflectivity. About 590 cm-1 Raman Stokes shift has also detected by using 514.5 nm and 488 nm Ar ion laser as excitation pump sources.

AB - Wavelengths around 1.15 μm, 1.3 μm and 1.7 μm can be used to pump Dy-doped ZBLAN fibre in order to generate ∼3 μm with high efficiency. Previously the generation of 2.9 μm from the Dy-ZBLAN fibre was demonstrated by pumping with 1.1 μm Yb-silica fibre laser sources. The laser slope efficiency and lasing threshold demonstrated was about ∼5% and ∼1.78 W. In this investigation, the longer wavelength absorption band (6H 9/2, 6F11/2) centred at 1.3 μm of Dy 3+-doped ZBLAN is utilised and the lasing transition around ∼3 μm takes places from 6H13/2 → 6H 15/2. With this pumping scheme the Stokes' efficiency is expected to be up to ∼45%. A quasi-continuous wave Dy3+-ZBLAN fibre laser pumped by a ∼1.3 μm Nd:YAG laser and operating at 2.96 μm with a bandwidth (FWHM) of ∼14 nm has been demonstrated. For a 60cm fibre length, a threshold of 0.5W and a slope efficiency of ∼20% with respect to the absorbed pump power was observed. The overall pump absorption in the fibre was around 84%. The cavity reflectivities at 2.9 μm were 99% and 50%. The demonstrated slope efficiency was 45% of the Stokes' limit. The slope efficiency was around four times higher and the threshold around 3.6 times lower than the previous performance demonstrated by using the 1.1 μm Yb fibre laser pumping scheme. The higher performance achieved compared to the 1.1 μm pump scheme is due to the higher Stokes' limit, lower pump ESA losses and higher cavity reflectivity. About 590 cm-1 Raman Stokes shift has also detected by using 514.5 nm and 488 nm Ar ion laser as excitation pump sources.

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KW - Fluoride

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KW - ZBLAN

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DO - 10.1117/12.666892

M3 - Conference proceeding contribution

SN - 0819462462

SN - 9780819462466

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BT - Solid State Lasers and Amplifiers II

PB - SPIE

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ER -

Tsang YH, El-Taher AE, King TA, Chang KP, Jackson SD. Efficient 2.96 micron dysprosium-doped ZBLAN fibre laser pumped at 1.3 micron. In Solid State Lasers and Amplifiers II. Vol. 6190. Washington, DC: SPIE. 2006. p. 1-10. 61900J https://doi.org/10.1117/12.666892