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Efficient Er:YAG lased pumped in-band by an Er/Yb fibre laser

Efficient Er:YAG lased pumped in-band by an Er/Yb fibre laser
Efficient Er:YAG lased pumped in-band by an Er/Yb fibre laser
Solid-state lasers operating in the eye-safe wavelength regime around ~1.5-2.1 µm regime have numerous applications. In many of these applications the requirement for high- power is also accompanied by the need for high efficiency and good beam quality, which are often difficult to achieve in conventional solid-state lasers due to the detrimental effects of thermal loading. Recently, there has been dramatic progress in scaling output power from cladding-pumped Er/Yb and Tm doped silica fibre lasers operating in the 1.53-1.62 µm and 1.85-2.1 µm regime respectively. Fibre lasers offer the attraction of relatively simple thermal management and hence a high degree of immunity to thermal effects, but suffer from the drawback that, in pulsed mode, energies are limited by amplified spontaneous emission and by damage to the fibre end facets. An alternative approach which circumvents this problem is to use employ a hybrid laser approach where the cladding-pumped fibre laser is used to 'in-band' pump a bulk solid-state laser. This has the attraction of very low quantum defect heating in the bulk crystal and hence relatively weak thermal effects. In recent work, efficient operation of Er:YAG [1] and Ho:YAG [2] lasers, end-pumped by cladding-pumped Er/Yb and Tm fibre lasers respectively, has been demonstrated. cont'd
Jander, P.
f1ce5878-a2c0-4f48-8521-cc851cfc4125
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Jander, P.
f1ce5878-a2c0-4f48-8521-cc851cfc4125
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2

Jander, P., Sahu, J.K. and Clarkson, W.A. (2004) Efficient Er:YAG lased pumped in-band by an Er/Yb fibre laser. EPS-QEOD Europhoton 2004. 29 Aug - 03 Sep 2004.

Record type: Conference or Workshop Item (Paper)

Abstract

Solid-state lasers operating in the eye-safe wavelength regime around ~1.5-2.1 µm regime have numerous applications. In many of these applications the requirement for high- power is also accompanied by the need for high efficiency and good beam quality, which are often difficult to achieve in conventional solid-state lasers due to the detrimental effects of thermal loading. Recently, there has been dramatic progress in scaling output power from cladding-pumped Er/Yb and Tm doped silica fibre lasers operating in the 1.53-1.62 µm and 1.85-2.1 µm regime respectively. Fibre lasers offer the attraction of relatively simple thermal management and hence a high degree of immunity to thermal effects, but suffer from the drawback that, in pulsed mode, energies are limited by amplified spontaneous emission and by damage to the fibre end facets. An alternative approach which circumvents this problem is to use employ a hybrid laser approach where the cladding-pumped fibre laser is used to 'in-band' pump a bulk solid-state laser. This has the attraction of very low quantum defect heating in the bulk crystal and hence relatively weak thermal effects. In recent work, efficient operation of Er:YAG [1] and Ho:YAG [2] lasers, end-pumped by cladding-pumped Er/Yb and Tm fibre lasers respectively, has been demonstrated. cont'd

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e-pub ahead of print date: 2004
Additional Information: ThE3
Venue - Dates: EPS-QEOD Europhoton 2004, 2004-08-29 - 2004-09-03

Identifiers

Local EPrints ID: 41714
URI: https://eprints.soton.ac.uk/id/eprint/41714
PURE UUID: 2db039e2-7d8a-4406-87ff-692c4e402fa8

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Date deposited: 16 Oct 2006
Last modified: 17 Jul 2017 15:28

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