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High power diode pumped Tm:YAG laser at 2µm

High power diode pumped Tm:YAG laser at 2µm
High power diode pumped Tm:YAG laser at 2µm
2µm lasers have numerous applications in areas such as Lidar and medicine often requiring output powers in the region of >10W. There are several problems to consider when attempting to power scale diode pumped Tm:YAG lasers to these high power levels at room temperature. The laser resonator design must cope with the strongly-aberrated, thermally induced lens which results from intense end-pumping, maintaining good beam quality. High power lasers also suffer strong thermally-induced birefringence in laser media such as YAG. This causes large depolarisation losses for polarised lasers and can cause significant reductions in output power and efficiency. The low stimulated emission cross-section and quasi-three-level nature of Tm:YAG renders the performance particularly sensitive to these thermally-induced losses.
Hayward, R.A.
75d8a6ac-ff53-44a9-b2b5-21617a2d73a7
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Hanna, D.C.
3da5a5b4-71c2-4441-bb67-21f0d28a187d
Hayward, R.A.
75d8a6ac-ff53-44a9-b2b5-21617a2d73a7
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Hanna, D.C.
3da5a5b4-71c2-4441-bb67-21f0d28a187d

Hayward, R.A., Clarkson, W.A. and Hanna, D.C. (1999) High power diode pumped Tm:YAG laser at 2µm. 14th National Quantum Electronics Conference (QE14), United Kingdom. 06 - 09 Sep 1999.

Record type: Conference or Workshop Item (Paper)

Abstract

2µm lasers have numerous applications in areas such as Lidar and medicine often requiring output powers in the region of >10W. There are several problems to consider when attempting to power scale diode pumped Tm:YAG lasers to these high power levels at room temperature. The laser resonator design must cope with the strongly-aberrated, thermally induced lens which results from intense end-pumping, maintaining good beam quality. High power lasers also suffer strong thermally-induced birefringence in laser media such as YAG. This causes large depolarisation losses for polarised lasers and can cause significant reductions in output power and efficiency. The low stimulated emission cross-section and quasi-three-level nature of Tm:YAG renders the performance particularly sensitive to these thermally-induced losses.

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More information

Published date: 1999
Venue - Dates: 14th National Quantum Electronics Conference (QE14), United Kingdom, 1999-09-06 - 1999-09-09

Identifiers

Local EPrints ID: 76519
URI: https://eprints.soton.ac.uk/id/eprint/76519
PURE UUID: 42f45d30-06b4-4985-9611-8b90469d4ec0

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 26 Feb 2019 17:34

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Contributors

Author: R.A. Hayward
Author: W.A. Clarkson
Author: D.C. Hanna

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