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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 14 — Jul. 5, 2010
  • pp: 14541–14546

Experimental demonstration of spatially coherent beam combining using optical parametric amplification

Takashi Kurita, Keiichi Sueda, Koji Tsubakimoto, and Noriaki Miyanaga  »View Author Affiliations


Optics Express, Vol. 18, Issue 14, pp. 14541-14546 (2010)
http://dx.doi.org/10.1364/OE.18.014541


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Abstract

We experimentally demonstrated coherent beam combining using optical parametric amplification with a nonlinear crystal pumped by random-phased multiple-beam array of the second harmonic of a Nd:YAG laser at 10-Hz repetition rate. In the proof-of-principle experiment, the phase jump between two pump beams was precisely controlled by a motorized actuator. For the demonstration of multiple-beam combining a random phase plate was used to create random-phased beamlets as a pump pulse. Far-field patterns of the pump, the signal, and the idler indicated that the spatially coherent signal beams were obtained on both cases. This approach allows scaling of the intensity of optical parametric chirped pulse amplification up to the exa-watt level while maintaining diffraction-limited beam quality.

© 2010 OSA

OCIS Codes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(140.3298) Lasers and laser optics : Laser beam combining

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: March 29, 2010
Revised Manuscript: April 25, 2010
Manuscript Accepted: April 30, 2010
Published: June 23, 2010

Citation
Takashi Kurita, Keiichi Sueda, Koji Tsubakimoto, and Noriaki Miyanaga, "Experimental demonstration of spatially coherent beam combining using optical parametric amplification," Opt. Express 18, 14541-14546 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-14-14541


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References

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