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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 19 — Oct. 1, 2012
  • pp: 3978–3980

Active coherent beam combining of a five-element, 800 W nanosecond fiber amplifier array

Rongtao Su, Pu Zhou, Xiaolin Wang, Hanwei Zhang, and Xiaojun Xu  »View Author Affiliations


Optics Letters, Vol. 37, Issue 19, pp. 3978-3980 (2012)
http://dx.doi.org/10.1364/OL.37.003978


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Abstract

Coherent beam combining of an 800 W nanosecond single-frequency fiber amplifier array has been demonstrated. Five high-power all-fiberized Yb-fiber amplifiers were tiled into a crisscross array, and the laser beams were actively phase-locked by using the stochastic parallel gradient descent algorithm. The contrast of the far-field intensity pattern of the combined beam was more than 91.6%. The combined pulsed laser has a pulse width of 3.5ns and a peak power of 21.5 kW.

© 2012 Optical Society of America

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3298) Lasers and laser optics : Laser beam combining
(140.3538) Lasers and laser optics : Lasers, pulsed

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: June 15, 2012
Revised Manuscript: August 9, 2012
Manuscript Accepted: August 15, 2012
Published: September 19, 2012

Citation
Rongtao Su, Pu Zhou, Xiaolin Wang, Hanwei Zhang, and Xiaojun Xu, "Active coherent beam combining of a five-element, 800 W nanosecond fiber amplifier array," Opt. Lett. 37, 3978-3980 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-19-3978


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