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Optimisation of cascaded Yb fiber amplifier chains using numerical-modelling

Optimisation of cascaded Yb fiber amplifier chains using numerical-modelling
Optimisation of cascaded Yb fiber amplifier chains using numerical-modelling
We show that it is possible to adapt existing software packages developed originally for modeling telecommunication devices and systems to reliably predict and optimize the performance of high-power Ytterbium doped fiber amplifier and laser systems. The ready availability of a flexible, user-friendly design tool should be of considerable practical interest to scientists and engineers working with this important new laser technology since Ytterbium amplifier and amplifier cascades are often difficult to optimize experimentally due to the three-level nature of the Ytterbium laser transition. As examples of the utility and accuracy of the software, as well as the complexity of the systems and amplifier properties that can be successfully modeled, we present a comparison of experimental and theoretical results for individual core and cladding pumped amplifiers, and also for an ultra-short pulse four-stage amplifier system optimized both to provide a broad gain bandwidth and to minimize nonlinear effects. We also show how high energy 100 ns pulses with complex user definable temporal profiles can be created in a gain-saturated amplifier by suitable pre-shaping of the low-energy input pulses. Furthermore, with appropriate modifications the same software package can be applied to fiber amplifiers based on other rare-earth elements and glass hosts.
1094-4087
12846-12858
He, F.
76eeb526-af95-4e06-9ea9-538897d3acc7
Price, J.H.V.
fddcce17-291b-4d01-bd38-8fb0453abdc8
Vu, K.T.
4f2d92db-ec6e-4474-bae4-d345b00083cd
Malinowski, A.
54fd31d4-b510-4726-a8cd-33b6b2ad0427
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
He, F.
76eeb526-af95-4e06-9ea9-538897d3acc7
Price, J.H.V.
fddcce17-291b-4d01-bd38-8fb0453abdc8
Vu, K.T.
4f2d92db-ec6e-4474-bae4-d345b00083cd
Malinowski, A.
54fd31d4-b510-4726-a8cd-33b6b2ad0427
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3

He, F., Price, J.H.V., Vu, K.T., Malinowski, A., Sahu, J.K. and Richardson, D.J. (2006) Optimisation of cascaded Yb fiber amplifier chains using numerical-modelling. Optics Express, 14 (26), 12846-12858. (doi:10.1364/OE.14.012846).

Record type: Article

Abstract

We show that it is possible to adapt existing software packages developed originally for modeling telecommunication devices and systems to reliably predict and optimize the performance of high-power Ytterbium doped fiber amplifier and laser systems. The ready availability of a flexible, user-friendly design tool should be of considerable practical interest to scientists and engineers working with this important new laser technology since Ytterbium amplifier and amplifier cascades are often difficult to optimize experimentally due to the three-level nature of the Ytterbium laser transition. As examples of the utility and accuracy of the software, as well as the complexity of the systems and amplifier properties that can be successfully modeled, we present a comparison of experimental and theoretical results for individual core and cladding pumped amplifiers, and also for an ultra-short pulse four-stage amplifier system optimized both to provide a broad gain bandwidth and to minimize nonlinear effects. We also show how high energy 100 ns pulses with complex user definable temporal profiles can be created in a gain-saturated amplifier by suitable pre-shaping of the low-energy input pulses. Furthermore, with appropriate modifications the same software package can be applied to fiber amplifiers based on other rare-earth elements and glass hosts.

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Published date: December 2006

Identifiers

Local EPrints ID: 46880
URI: https://eprints.soton.ac.uk/id/eprint/46880
ISSN: 1094-4087
PURE UUID: a6f3fb49-f02d-46c8-99b2-0fd41a9f1dd8
ORCID for J.H.V. Price: ORCID iD orcid.org/0000-0003-0256-9172
ORCID for D.J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058

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Date deposited: 23 Jul 2007
Last modified: 20 Jul 2019 01:24

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Contributors

Author: F. He
Author: J.H.V. Price ORCID iD
Author: K.T. Vu
Author: A. Malinowski
Author: J.K. Sahu
Author: D.J. Richardson ORCID iD

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