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Proceedings Paper

Microsecond-pulsed ytterbium fiber laser system with a broad tuning range and a small spectral linewidth
Author(s): Martin Engelbrecht; Dieter Wandt; Dietmar Kracht
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Paper Abstract

We present a tunable high power ytterbium fiber laser system which is suitable for a variety of applications in nonlinear frequency conversion, spectroscopy or in medicine technique. The realized laser system consists of a master oscillator power amplifier arrangement with a fiber integrated pulse shaper. The continuous-wave core-pumped fiber oscillator with a grating in Littman configuration as tuning element defines the spectral properties of the system, like tuning range and spectral linewidth. A fiber integrated modulator is used for pulse generation and shaping. The losses due to this modulator are compensated in a core-pumped amplifier. The final amplifier stage applying a double clad fiber generates peak powers at a multi Watt level. At a repetition rate of 20 kHz and a pulse duration of 3 &mgr;s an average output power of 1.8 Watt has been achieved corresponding to a peak power of 88 W. The system is tunable from 1040 nm to 1070 nm with a linewidth of 10 MHz. Experimental results on tuning performance, pulse shaping and stability will be presented.

Paper Details

Date Published: 21 February 2007
PDF: 7 pages
Proc. SPIE 6453, Fiber Lasers IV: Technology, Systems, and Applications, 645321 (21 February 2007); doi: 10.1117/12.700600
Show Author Affiliations
Martin Engelbrecht, Laser Zentrum Hannover e.V. (Germany)
Dieter Wandt, Laser Zentrum Hannover e.V. (Germany)
Dietmar Kracht, Laser Zentrum Hannover e.V. (Germany)

Published in SPIE Proceedings Vol. 6453:
Fiber Lasers IV: Technology, Systems, and Applications
Donald J. Harter; Andreas Tünnermann; Jes Broeng; Clifford Headley III, Editor(s)

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