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100W single mode single polarization picosecond ytterbium doped fibre MOPA frequency doubled to 530nm

100W single mode single polarization picosecond ytterbium doped fibre MOPA frequency doubled to 530nm
100W single mode single polarization picosecond ytterbium doped fibre MOPA frequency doubled to 530nm
High average power laser sources operating in the picosecond (ps) regime are useful for a wide range of applications including frequency-doubling and pumping of OPOs. Gain switching (GS) of laser diodes provides a practical and low cost method to generate ps pulses at GHz repetition rates and mW average power levels. Such devices represent excellent seeds for high power fiber MOPAs allowing power scaling to the 100W regime and we recently reported average powers in excess of 300W from a 1060nm gain-switched FP laser seeded ytterbium doped fiber amplifier (YDFA) MOPA [1, 2]. However this system incorporated free space pump and signal coupling - greatly compromising the practicality of the system. Moreover, the output polarization was ill-defined limiting the utility of the system for many frequency conversion applications. Herein we present a fiberised, diode-seeded, YDFA MOPA system generating linearly polarized, diffraction-limited, 20ps pulses at repetition rates ranging from 113.5 MHz to 908 MHz and at average output powers in excess of 100W. This system represents a considerable improvement in practicality and performance relative to previous high power, fiber-based ps pulse sources [3]. The output of the MOPA was launched into an LBO crystal to generate 45W of green light.
Chen, K.K.
63467a65-7428-4662-9810-3230e43dc4d4
Alam, S.-U.
2b6bdbe5-ddcc-4a88-9057-299360b93435
Hayes, J.R.
a6d3acd6-d7d5-4614-970e-0e8c594e48e2
Lin, D.
15535893-a4bf-4122-81f3-4e387c29cbd4
Malinowski, A.
54fd31d4-b510-4726-a8cd-33b6b2ad0427
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Chen, K.K.
63467a65-7428-4662-9810-3230e43dc4d4
Alam, S.-U.
2b6bdbe5-ddcc-4a88-9057-299360b93435
Hayes, J.R.
a6d3acd6-d7d5-4614-970e-0e8c594e48e2
Lin, D.
15535893-a4bf-4122-81f3-4e387c29cbd4
Malinowski, A.
54fd31d4-b510-4726-a8cd-33b6b2ad0427
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3

Chen, K.K., Alam, S.-U., Hayes, J.R., Lin, D., Malinowski, A. and Richardson, D.J. (2009) 100W single mode single polarization picosecond ytterbium doped fibre MOPA frequency doubled to 530nm. Photonex '09. 14 - 15 Oct 2009.

Record type: Conference or Workshop Item (Paper)

Abstract

High average power laser sources operating in the picosecond (ps) regime are useful for a wide range of applications including frequency-doubling and pumping of OPOs. Gain switching (GS) of laser diodes provides a practical and low cost method to generate ps pulses at GHz repetition rates and mW average power levels. Such devices represent excellent seeds for high power fiber MOPAs allowing power scaling to the 100W regime and we recently reported average powers in excess of 300W from a 1060nm gain-switched FP laser seeded ytterbium doped fiber amplifier (YDFA) MOPA [1, 2]. However this system incorporated free space pump and signal coupling - greatly compromising the practicality of the system. Moreover, the output polarization was ill-defined limiting the utility of the system for many frequency conversion applications. Herein we present a fiberised, diode-seeded, YDFA MOPA system generating linearly polarized, diffraction-limited, 20ps pulses at repetition rates ranging from 113.5 MHz to 908 MHz and at average output powers in excess of 100W. This system represents a considerable improvement in practicality and performance relative to previous high power, fiber-based ps pulse sources [3]. The output of the MOPA was launched into an LBO crystal to generate 45W of green light.

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Published date: 14 October 2009
Venue - Dates: Photonex '09, 2009-10-14 - 2009-10-15
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 182599
URI: https://eprints.soton.ac.uk/id/eprint/182599
PURE UUID: daa7d066-5224-4b97-b1de-1fed4e2d6526
ORCID for D.J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058

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Date deposited: 28 Apr 2011 09:11
Last modified: 06 Mar 2019 01:37

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