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Proceedings Paper

MW+ peak power sub-nsec 10-kHz repetition rate polarization-maintaining fiber-amplifiers using tapered Yb-doped fibers
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Paper Abstract

Novel tapered Yb-doped polarization-maintaining (PM) large-mode-area (LMA) fibers were fabricated, with 25/250μm and 40/400μm core/clad at each end, and used in the last stage of a multi-stage Yb-fiber MOPA. The fiber-MOPA is controlled by high-speed FPGA for real-time control of the seed laser diode modulation, electro-optic modulator and acousto-optic modulator. Stable 0.3nsec pulses at 10kHz rate with 0.3mJ pulse energy (1MW peak power) is demonstrated. At 1nsec pulsewidth, scaling to >0.5mJ pulse energy is demonstrated. Polarization extinction ratio of 17dB is obtained with diffraction limited beam quality and excellent (<3%) power stability. Such compact and robust pulsed fiber amplifiers enable next generation of airborne and space lidar transmitters.

Paper Details

Date Published: 16 February 2012
PDF: 8 pages
Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 82371T (16 February 2012); doi: 10.1117/12.909779
Show Author Affiliations
Youming Chen, Fibertek, Inc. (United States)
Frank Kimpel, Fibertek, Inc. (United States)
Jean-Luc Fouron, Fibertek, Inc. (United States)
Shantanu Gupta, Fibertek, Inc. (United States)


Published in SPIE Proceedings Vol. 8237:
Fiber Lasers IX: Technology, Systems, and Applications
Eric C. Honea; Sami T. Hendow, Editor(s)

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