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Opportunities in high-power fiber lasers

Opportunities in high-power fiber lasers
Opportunities in high-power fiber lasers
Fiber lasers and amplifiers offer unique characteristics that are derived from the use of a waveguide and the properties of rare-earth doped silica glass. Their capability for high output power, with high efficiency, has been demonstrated both in CW and pulsed regimes. Cladding-pumped Yb-doped fiber lasers have now reached beyond kW levels with good beam quality. Advances in both fiber technology and high-power multimode diode pump sources, and the inherent power scalability of cladding-pumped fibers, lie behind this power surge. However, there are still many challenges to overcome in the high-power fiber laser area. These include, for example, single-mode output at higher powers and power scaling of a three-level laser. This paper reviews novel W-type fiber and depressed clad hollow optical fiber waveguide structures designed with distributed wavelength filter characteristics to achieve an efficient and high power cladding-pumped three-level lasers such as Nd-doped fiber laser operating at 930 nm and Yb-doped fiber laser at 980 nm. Moreover, such fiber geometries enable to scale up the output power in a small and single-mode core for generating a single-mode output beam in a robust and reliable manner.
7pp
Sahu, Jayanta K.
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Kim, Jaesun
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Yoo, Seongwoo
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Webb, A.S.
a0421d45-fb98-4dbe-9440-62847793d099
Codemard, Christophe
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Dupriez, Pascal
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Jeong, Yoonchan
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Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Payne, David N.
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Dutta, Achyut K.
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Ohishi, Yasutake
420f9705-6e48-4fe3-8d33-e5aac1a91bb8
Dutta, Niloy K.
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Moerk, Jesper
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Sahu, Jayanta K., Kim, Jaesun, Yoo, Seongwoo, Webb, A.S., Codemard, Christophe, Dupriez, Pascal, Jeong, Yoonchan, Nilsson, Johan, Richardson, David J. and Payne, David N., (2006) Opportunities in high-power fiber lasers Dutta, Achyut K., Ohishi, Yasutake, Dutta, Niloy K. and Moerk, Jesper (eds.) At SPIE Optics East. 01 - 04 Oct 2006. 7 pp, 7pp.

Sahu, Jayanta K., Kim, Jaesun, Yoo, Seongwoo, Webb, A.S., Codemard, Christophe, Dupriez, Pascal, Jeong, Yoonchan, Nilsson, Johan, Richardson, David J. and Payne, David N., (2006) Opportunities in high-power fiber lasers Dutta, Achyut K., Ohishi, Yasutake, Dutta, Niloy K. and Moerk, Jesper (eds.) At SPIE Optics East. 01 - 04 Oct 2006. 7 pp, 7pp.

Record type: Conference or Workshop Item (Other)

Abstract

Fiber lasers and amplifiers offer unique characteristics that are derived from the use of a waveguide and the properties of rare-earth doped silica glass. Their capability for high output power, with high efficiency, has been demonstrated both in CW and pulsed regimes. Cladding-pumped Yb-doped fiber lasers have now reached beyond kW levels with good beam quality. Advances in both fiber technology and high-power multimode diode pump sources, and the inherent power scalability of cladding-pumped fibers, lie behind this power surge. However, there are still many challenges to overcome in the high-power fiber laser area. These include, for example, single-mode output at higher powers and power scaling of a three-level laser. This paper reviews novel W-type fiber and depressed clad hollow optical fiber waveguide structures designed with distributed wavelength filter characteristics to achieve an efficient and high power cladding-pumped three-level lasers such as Nd-doped fiber laser operating at 930 nm and Yb-doped fiber laser at 980 nm. Moreover, such fiber geometries enable to scale up the output power in a small and single-mode core for generating a single-mode output beam in a robust and reliable manner.

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More information

Published date: October 2006
Venue - Dates: SPIE Optics East, 2006-10-01 - 2006-10-04

Identifiers

Local EPrints ID: 47838
URI: http://eprints.soton.ac.uk/id/eprint/47838
PURE UUID: 0c445b84-cfaf-49d3-8728-f96daa0a9481
ORCID for Johan Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

Catalogue record

Date deposited: 13 Aug 2007
Last modified: 13 Oct 2017 05:28

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Contributors

Author: Jayanta K. Sahu
Author: Jaesun Kim
Author: Seongwoo Yoo
Author: A.S. Webb
Author: Pascal Dupriez
Author: Yoonchan Jeong
Author: Johan Nilsson ORCID iD
Author: David N. Payne
Editor: Achyut K. Dutta
Editor: Yasutake Ohishi
Editor: Niloy K. Dutta
Editor: Jesper Moerk

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