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Over 55W of frequency doubled light at 530nm pumped by an all-fiber diffraction limited picosecond fibre MOPA

Over 55W of frequency doubled light at 530nm pumped by an all-fiber diffraction limited picosecond fibre MOPA
Over 55W of frequency doubled light at 530nm pumped by an all-fiber diffraction limited picosecond fibre MOPA
We report the realisation of a high power, picosecond pulse source at 530 nm pumped by an all-fiber, single mode, single polarisation, Yb-doped MOPA. The pump MOPA comprised of a gain switched seed source generating 20 ps pulse source at a repetition frequency of 910 MHz followed by three amplification stages. Output power in excess of 100 W was obtained at 85% slope efficiency with respect to launched pump power at 975 nm. A 15mm long LBO crystal was used to frequency double the single mode, single polarisation output of the fiber MOPA. To satisfy the phase matching condition, the internal temperature of the LBO crystal was maintained at 1550C. Frequency doubled power in excess of 55 W was obtained at 56% optical-to-optical conversion efficiency. Output power at 530 nm started to roll-off after 50 W due to self-phase modulation (SPM) assisted spectral broadening of the fundamental light within the final stage amplifier. Measured spectral bandwidth of the frequency doubled signal remained at ~0.4 nm with the increase in fundamental power even though that of the fundamental increased steadily with output power and reached to a value of 0.9 nm at 100 W output power.
Alam, S.-U.
2b6bdbe5-ddcc-4a88-9057-299360b93435
Chen, Kang Kang
37c5f50d-c027-44bb-ac51-23624f4ebcd4
Hayes, J.R.
a6d3acd6-d7d5-4614-970e-0e8c594e48e2
Lin, Dejiao
3f549d76-a6b0-47a7-a1be-c0daa7d47468
Malinowski, A.
54fd31d4-b510-4726-a8cd-33b6b2ad0427
Baker, H.J.
b4b3ad8b-e5df-459a-b3f7-315074677e96
Trela, N.
9f35ba79-3224-415e-b627-b5e4a56a0d48
McBride, R.
5f3ce533-19e5-43d0-a24f-5ac26dadd46e
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Alam, S.-U.
2b6bdbe5-ddcc-4a88-9057-299360b93435
Chen, Kang Kang
37c5f50d-c027-44bb-ac51-23624f4ebcd4
Hayes, J.R.
a6d3acd6-d7d5-4614-970e-0e8c594e48e2
Lin, Dejiao
3f549d76-a6b0-47a7-a1be-c0daa7d47468
Malinowski, A.
54fd31d4-b510-4726-a8cd-33b6b2ad0427
Baker, H.J.
b4b3ad8b-e5df-459a-b3f7-315074677e96
Trela, N.
9f35ba79-3224-415e-b627-b5e4a56a0d48
McBride, R.
5f3ce533-19e5-43d0-a24f-5ac26dadd46e
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3

Alam, S.-U., Chen, Kang Kang, Hayes, J.R., Lin, Dejiao, Malinowski, A., Baker, H.J., Trela, N., McBride, R. and Richardson, D.J. (2010) Over 55W of frequency doubled light at 530nm pumped by an all-fiber diffraction limited picosecond fibre MOPA. Photonics West 2010, San Francisco, United States. 23 - 28 Jan 2010.

Record type: Conference or Workshop Item (Paper)

Abstract

We report the realisation of a high power, picosecond pulse source at 530 nm pumped by an all-fiber, single mode, single polarisation, Yb-doped MOPA. The pump MOPA comprised of a gain switched seed source generating 20 ps pulse source at a repetition frequency of 910 MHz followed by three amplification stages. Output power in excess of 100 W was obtained at 85% slope efficiency with respect to launched pump power at 975 nm. A 15mm long LBO crystal was used to frequency double the single mode, single polarisation output of the fiber MOPA. To satisfy the phase matching condition, the internal temperature of the LBO crystal was maintained at 1550C. Frequency doubled power in excess of 55 W was obtained at 56% optical-to-optical conversion efficiency. Output power at 530 nm started to roll-off after 50 W due to self-phase modulation (SPM) assisted spectral broadening of the fundamental light within the final stage amplifier. Measured spectral bandwidth of the frequency doubled signal remained at ~0.4 nm with the increase in fundamental power even though that of the fundamental increased steadily with output power and reached to a value of 0.9 nm at 100 W output power.

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More information

Published date: January 2010
Additional Information: 7580-6
Venue - Dates: Photonics West 2010, San Francisco, United States, 2010-01-23 - 2010-01-28
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 362823
URI: https://eprints.soton.ac.uk/id/eprint/362823
PURE UUID: 130e98fc-bdc9-426b-a8f1-d9494d0c15c9
ORCID for D.J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058

Catalogue record

Date deposited: 10 Mar 2014 13:44
Last modified: 08 Aug 2019 00:39

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