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Internally-frequency-doubled Yb fiber laser with 15W CW green output

Internally-frequency-doubled Yb fiber laser with 15W CW green output
Internally-frequency-doubled Yb fiber laser with 15W CW green output
In this paper we present a high power continuous-wave (CW) green source using a novel approach for frequency doubling of high power CW fiber lasers based on an internal resonant enhancement cavity integrated within the fiber laser resonator. The experimental configuration (shown in Fig. 1) comprised a double-clad fiber with an Yb-doped core in a simple standing-wave resonator. Feedback for lasing was provided by a diffraction grating at one end of the fiber, and by an external cavity containing a resonant enhancement cavity at the opposite end of the fiber. The enhancement cavity comprised a Brewster-angled LiB3O5 (LBO) crystal placed in an oven and cut for type I non-critical phase-matching. In this scheme, the fiber laser automatically lases on axial modes that are resonant in the enhancement cavity avoiding the need for active stabilisation. The fundamental laser power is enhanced in the resonant cavity by virtue of its relatively low loss yielding high second harmonic conversion efficiency.
Cieslak, Rafal
42a39095-df7e-44e1-94bf-d33d208e36d3
Clarkson, William Andrew
3b060f63-a303-4fa5-ad50-95f166df1ba2
Cieslak, Rafal
42a39095-df7e-44e1-94bf-d33d208e36d3
Clarkson, William Andrew
3b060f63-a303-4fa5-ad50-95f166df1ba2

Cieslak, Rafal and Clarkson, William Andrew (2011) Internally-frequency-doubled Yb fiber laser with 15W CW green output. European Conference on Lasers and Electro-Optics (CLEO/EQEC-Europe 2011), Germany. 22 - 26 May 2011. (doi:10.1109/CLEOE.2011.5943147).

Record type: Conference or Workshop Item (Paper)

Abstract

In this paper we present a high power continuous-wave (CW) green source using a novel approach for frequency doubling of high power CW fiber lasers based on an internal resonant enhancement cavity integrated within the fiber laser resonator. The experimental configuration (shown in Fig. 1) comprised a double-clad fiber with an Yb-doped core in a simple standing-wave resonator. Feedback for lasing was provided by a diffraction grating at one end of the fiber, and by an external cavity containing a resonant enhancement cavity at the opposite end of the fiber. The enhancement cavity comprised a Brewster-angled LiB3O5 (LBO) crystal placed in an oven and cut for type I non-critical phase-matching. In this scheme, the fiber laser automatically lases on axial modes that are resonant in the enhancement cavity avoiding the need for active stabilisation. The fundamental laser power is enhanced in the resonant cavity by virtue of its relatively low loss yielding high second harmonic conversion efficiency.

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More information

e-pub ahead of print date: 2011
Additional Information: CJ3.2
Venue - Dates: European Conference on Lasers and Electro-Optics (CLEO/EQEC-Europe 2011), Germany, 2011-05-22 - 2011-05-26
Organisations: Optoelectronics Research Centre, Physics & Astronomy

Identifiers

Local EPrints ID: 341554
URI: https://eprints.soton.ac.uk/id/eprint/341554
PURE UUID: 18bae20b-e4ff-419e-8235-be0223c23c9b

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Date deposited: 27 Jul 2012 10:15
Last modified: 19 Aug 2019 16:33

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Contributors

Author: Rafal Cieslak

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