Diode-pumped laser with Yb:YAG single-crystal fiber grown by the micro-pulling down technique

Laser emission obtained from an Yb:YAG single-crystal fiber directly grown by the micro-pulling down technique is demonstrated for the first time. We achieved 11.2 W of continuous wave (CW) output power at 1031 nm for 55 W of incident pump power at 940 nm. In the Q-switched regime, we obtained pulse...

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Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2009-02, Vol.94 (2), p.203-207
Main Authors: Sangla, D., Aubry, N., Didierjean, J., Perrodin, D., Balembois, F., Lebbou, K., Brenier, A., Georges, P., Tillement, O., Fourmigué, J.-M.
Format: Article
Language:English
Subjects:
Beam characteristics: profile, intensity, and power
spatial pattern formation
Continuous wave
Crystal fibers
Czochralski method
Diode-pumped lasers
Emission
Engineering
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Laser optical systems: design and operation
Lasers
Optical Devices
Optics
Photonics
Physical Chemistry
Physics
Physics and Astronomy
Pumps
Q-switching
Quantum Optics
Single crystals
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Summary:Laser emission obtained from an Yb:YAG single-crystal fiber directly grown by the micro-pulling down technique is demonstrated for the first time. We achieved 11.2 W of continuous wave (CW) output power at 1031 nm for 55 W of incident pump power at 940 nm. In the Q-switched regime, we obtained pulses as short as 17 ns, for an average power of 2.3 W at 2 kHz corresponding to an energy of 1.15  mJ. In both cases, the  M 2 factor was 2.5. This single-crystal fiber showed performance similar to a standard rod elaborated by the Czochralski method. The potential of Yb 3+ -doped single-crystal fibers is presented for scalable high-average and high-peak-power laser systems.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-008-3288-8