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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 6 — Mar. 24, 2014
  • pp: 7186–7193

Pulsed operation of a resonantly pumped, linearly polarised, large mode area holmium-doped fibre amplifier

Alexander Hemming, Jim Richards, Nikita Simakov, Alan Davidson, Neil Carmody, John Haub, and Adrian Carter  »View Author Affiliations


Optics Express, Vol. 22, Issue 6, pp. 7186-7193 (2014)
http://dx.doi.org/10.1364/OE.22.007186


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Abstract

We present the design of a polarisation maintaining, resonantly and cladding pumped, large mode area holmium-doped fibre. We describe the operation of this fibre in a pulsed amplifier configuration. The amplifier produced pulses with energy of 2.25 mJ and duration of 20 ns at a repetition rate of 20 kHz and average power of 45 W. The holmium-doped fibre provided >10 dB of gain at 2.09 µm and the polarisation extinction ratio was >11.5 dB. The beam quality of the output (M2) was 1.6. To the best of our knowledge this is the highest pulse energy achieved from any singly holmium-doped fibre by an order of magnitude.

© 2014 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3460) Lasers and laser optics : Lasers
(140.3510) Lasers and laser optics : Lasers, fiber

ToC Category:
Fiber Optics

History
Original Manuscript: January 28, 2014
Revised Manuscript: February 26, 2014
Manuscript Accepted: February 28, 2014
Published: March 19, 2014

Citation
Alexander Hemming, Jim Richards, Nikita Simakov, Alan Davidson, Neil Carmody, John Haub, and Adrian Carter, "Pulsed operation of a resonantly pumped, linearly polarised, large mode area holmium-doped fibre amplifier," Opt. Express 22, 7186-7193 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-6-7186


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