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High-power, high-brightness green laser based on a frequency doubled picosecond fiber laser

High-power, high-brightness green laser based on a frequency doubled picosecond fiber laser
High-power, high-brightness green laser based on a frequency doubled picosecond fiber laser
Over recent years, there has been a tremendous and rapid progress in power scaling Yb-doped fiber-based picosecond sources due to their high efficiency, excellent beam quality and immunity to thermo-optical effects. These remarkable properties are not only very attractive for many scientific and industrial applications but also for frequency doubling to generate green. Besides good beam quality, a high degree of polarization and a narrow linewidth, further increase in conversion efficiency requires high peak power and increased crystal length. High peak power can be obtained by employing a fiber master-oscillator power amplifier design (MOPA) where seed pulses with adequate duty cycle are amplified to high average powers. However in this arrangement minimizing nonlinear effects arising in the fiber amplifiers becomes a challenge. The amplification of picosecond pulses causes linewidth broadening and the spectral bandwidth of the crystal is reduced by a preferred longer length. This trade-off can result in lower frequency doubling efficiency. In this paper, as well as the benefits and limitations of fiber lasers applied to nonlinear frequency conversion, we will review the various design considerations for the development of a high average power picosecond green laser based on single-pass frequency doubling of a fiber MOPA system.
Dupriez, P.
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Sahu, J.K.
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Jeong, Y.
1c4007b7-fc94-4f7d-a080-929d40946902
Malinowski, A.
54fd31d4-b510-4726-a8cd-33b6b2ad0427
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Dupriez, P.
4a46a78f-54e8-4611-822f-b55db0c37239
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Jeong, Y.
1c4007b7-fc94-4f7d-a080-929d40946902
Malinowski, A.
54fd31d4-b510-4726-a8cd-33b6b2ad0427
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b

Dupriez, P., Sahu, J.K., Jeong, Y., Malinowski, A., Richardson, D.J. and Nilsson, J. (2007) High-power, high-brightness green laser based on a frequency doubled picosecond fiber laser. Photonics West 2007: SPIE 6453 - Lasers and Applications in Science and Engineering. 21 - 25 Jan 2007. (doi:10.1117/12.717529).

Record type: Conference or Workshop Item (Paper)

Abstract

Over recent years, there has been a tremendous and rapid progress in power scaling Yb-doped fiber-based picosecond sources due to their high efficiency, excellent beam quality and immunity to thermo-optical effects. These remarkable properties are not only very attractive for many scientific and industrial applications but also for frequency doubling to generate green. Besides good beam quality, a high degree of polarization and a narrow linewidth, further increase in conversion efficiency requires high peak power and increased crystal length. High peak power can be obtained by employing a fiber master-oscillator power amplifier design (MOPA) where seed pulses with adequate duty cycle are amplified to high average powers. However in this arrangement minimizing nonlinear effects arising in the fiber amplifiers becomes a challenge. The amplification of picosecond pulses causes linewidth broadening and the spectral bandwidth of the crystal is reduced by a preferred longer length. This trade-off can result in lower frequency doubling efficiency. In this paper, as well as the benefits and limitations of fiber lasers applied to nonlinear frequency conversion, we will review the various design considerations for the development of a high average power picosecond green laser based on single-pass frequency doubling of a fiber MOPA system.

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More information

Published date: 21 February 2007
Venue - Dates: Photonics West 2007: SPIE 6453 - Lasers and Applications in Science and Engineering, 2007-01-21 - 2007-01-25

Identifiers

Local EPrints ID: 441154
URI: http://eprints.soton.ac.uk/id/eprint/441154
PURE UUID: d34a7687-8b7c-4f3d-87b4-388c91a0b897
ORCID for D.J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058
ORCID for J. Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

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Date deposited: 03 Jun 2020 16:31
Last modified: 04 Jun 2020 00:27

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Contributors

Author: P. Dupriez
Author: J.K. Sahu
Author: Y. Jeong
Author: A. Malinowski
Author: D.J. Richardson ORCID iD
Author: J. Nilsson ORCID iD

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