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100W CW cladding-pumped Raman fiber last at 1120nm

100W CW cladding-pumped Raman fiber last at 1120nm
100W CW cladding-pumped Raman fiber last at 1120nm
In recent years, rare-earth doped silica fiber lasers have become a popular medium to generate very high-power laser source, in particular in the 1 µm range where up to 10 kW single-mode ytterbium doped fiber (YDF) laser source has been reported and up to 0.9 kW from Tm doped fiber. The powers from other wavelengths are much lower typically between 10 to 100 W. An alternative to produce gain and power in optical fiber is to use nonlinear effect such as stimulated Raman scattering (SRS). SRS is wavelength agile, limited only by the transparency range of the fiber and the pump power wavelength. In addition, SRS sources benefit from low quantum defect, in particular at shorter wavelengths making them extremely efficient. However, because these effects rely on strong optical intensities to take place, fibers with small core size are typically used with core pumping scheme, limiting the scope for power scaling. Therefore, no very high power Raman fiber laser (RFL) has been reported and little progress has been made to increase the output power of those. As far as we are aware, the highest reported power from a core pumped RFL is about 68 W. There are several challenges in power scaling core-pumped Raman fiber laser, mainly the power handling capacity of single-mode fiber and the careful adjustment of the fiber length to avoid spurious 2nd order Stokes generation in the laser cavity.
Codemard, C.A.
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Ji, J.
ae304f33-0543-4850-966e-03c02f74664f
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Codemard, C.A.
3aa50483-b61c-4e7e-b178-c9a88bb47bef
Ji, J.
ae304f33-0543-4850-966e-03c02f74664f
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b

Codemard, C.A., Ji, J., Sahu, J.K. and Nilsson, J. (2010) 100W CW cladding-pumped Raman fiber last at 1120nm. SPIE Photonics West, United States. 23 - 28 Jan 2010. (doi:10.1117/12.845606).

Record type: Conference or Workshop Item (Paper)

Abstract

In recent years, rare-earth doped silica fiber lasers have become a popular medium to generate very high-power laser source, in particular in the 1 µm range where up to 10 kW single-mode ytterbium doped fiber (YDF) laser source has been reported and up to 0.9 kW from Tm doped fiber. The powers from other wavelengths are much lower typically between 10 to 100 W. An alternative to produce gain and power in optical fiber is to use nonlinear effect such as stimulated Raman scattering (SRS). SRS is wavelength agile, limited only by the transparency range of the fiber and the pump power wavelength. In addition, SRS sources benefit from low quantum defect, in particular at shorter wavelengths making them extremely efficient. However, because these effects rely on strong optical intensities to take place, fibers with small core size are typically used with core pumping scheme, limiting the scope for power scaling. Therefore, no very high power Raman fiber laser (RFL) has been reported and little progress has been made to increase the output power of those. As far as we are aware, the highest reported power from a core pumped RFL is about 68 W. There are several challenges in power scaling core-pumped Raman fiber laser, mainly the power handling capacity of single-mode fiber and the careful adjustment of the fiber length to avoid spurious 2nd order Stokes generation in the laser cavity.

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More information

e-pub ahead of print date: 2010
Venue - Dates: SPIE Photonics West, United States, 2010-01-23 - 2010-01-28
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 340472
URI: https://eprints.soton.ac.uk/id/eprint/340472
PURE UUID: 91bc53b0-a2ac-4748-a307-0fb5e7233c42
ORCID for J. Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

Catalogue record

Date deposited: 22 Jun 2012 12:40
Last modified: 20 Jul 2019 01:11

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