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Temporally and spatially shaped fully-fiberized ytterbium-doped pulsed MOPA

Temporally and spatially shaped fully-fiberized ytterbium-doped pulsed MOPA
Temporally and spatially shaped fully-fiberized ytterbium-doped pulsed MOPA
We report a fully-fiberized, pulsed ytterbium-doped master oscillator power amplifier (MOPA) for materials processing applications providing both a temporal pulse and spatial beam shaping capability operating at a maximum average output power of 100 W. Adaptive temporal pulse shaping using an in-line electro-optic modulator was incorporated to reduce the impact of dynamic gain saturation and optical Kerr/Raman nonlinearities. The MOPA is capable of generating 2.5 mJ flattopped optical pulses with 20 kW peak power as well as other user-defined, shaped pulses. Spatial beam shaping is obtained using a pair of axicon (conical) lenses at the end of the beam delivery optic allowing ring shaped output beams to be generated from the otherwise collimated Gaussian output.
1612-2011
747-753
Lin, D.
3f549d76-a6b0-47a7-a1be-c0daa7d47468
Alam, S.U.
2b6bdbe5-ddcc-4a88-9057-299360b93435
Malinowski, A.
54fd31d4-b510-4726-a8cd-33b6b2ad0427
Chen, K.K.
37c5f50d-c027-44bb-ac51-23624f4ebcd4
Hayes, J.R.
a6d3acd6-d7d5-4614-970e-0e8c594e48e2
Flanagan, J.C.
81086af7-52dd-4f86-a7ad-35daa9d73d2e
Geddes, V.
6b4f8c64-6f82-4df5-a38a-276a0acbf502
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Ingram, S.
8d152306-698b-4d06-83ea-b0138091cd0f
Norman, S.
9e0725d4-e274-4262-90f6-434ba6d183bd
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Lin, D.
3f549d76-a6b0-47a7-a1be-c0daa7d47468
Alam, S.U.
2b6bdbe5-ddcc-4a88-9057-299360b93435
Malinowski, A.
54fd31d4-b510-4726-a8cd-33b6b2ad0427
Chen, K.K.
37c5f50d-c027-44bb-ac51-23624f4ebcd4
Hayes, J.R.
a6d3acd6-d7d5-4614-970e-0e8c594e48e2
Flanagan, J.C.
81086af7-52dd-4f86-a7ad-35daa9d73d2e
Geddes, V.
6b4f8c64-6f82-4df5-a38a-276a0acbf502
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Ingram, S.
8d152306-698b-4d06-83ea-b0138091cd0f
Norman, S.
9e0725d4-e274-4262-90f6-434ba6d183bd
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3

Lin, D., Alam, S.U., Malinowski, A., Chen, K.K., Hayes, J.R., Flanagan, J.C., Geddes, V., Nilsson, J., Ingram, S., Norman, S. and Richardson, D.J. (2011) Temporally and spatially shaped fully-fiberized ytterbium-doped pulsed MOPA. Laser Physics Letters, 8 (10), 747-753. (doi:10.1002/lapl.201110057).

Record type: Article

Abstract

We report a fully-fiberized, pulsed ytterbium-doped master oscillator power amplifier (MOPA) for materials processing applications providing both a temporal pulse and spatial beam shaping capability operating at a maximum average output power of 100 W. Adaptive temporal pulse shaping using an in-line electro-optic modulator was incorporated to reduce the impact of dynamic gain saturation and optical Kerr/Raman nonlinearities. The MOPA is capable of generating 2.5 mJ flattopped optical pulses with 20 kW peak power as well as other user-defined, shaped pulses. Spatial beam shaping is obtained using a pair of axicon (conical) lenses at the end of the beam delivery optic allowing ring shaped output beams to be generated from the otherwise collimated Gaussian output.

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More information

Published date: 28 July 2011
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 352821
URI: http://eprints.soton.ac.uk/id/eprint/352821
ISSN: 1612-2011
PURE UUID: 24a04969-17af-4040-9e5e-627bc62466ae
ORCID for J. Nilsson: ORCID iD orcid.org/0000-0003-1691-7959
ORCID for D.J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058

Catalogue record

Date deposited: 21 May 2013 11:20
Last modified: 08 Oct 2019 00:55

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Contributors

Author: D. Lin
Author: S.U. Alam
Author: A. Malinowski
Author: K.K. Chen
Author: J.R. Hayes
Author: J.C. Flanagan
Author: V. Geddes
Author: J. Nilsson ORCID iD
Author: S. Ingram
Author: S. Norman
Author: D.J. Richardson ORCID iD

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