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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 3 — Feb. 1, 2010
  • pp: 2995–2999

Phase controlled beam combining with nonlinear frequency conversion

Peiqing Zhang, Yefeng Guan, Xiangsheng Xie, Jianying Zhou, Li Yan, and Kam Sing Wong  »View Author Affiliations

Optics Express, Vol. 18, Issue 3, pp. 2995-2999 (2010)

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A phase controlled beam combining via nonlinear optical conversion is proposed and demonstrated. This process involves the combining of the fields at the second harmonic frequency generated by non-collinear input fields. The arrangement of the excitation configuration allows the generated second-harmonic light waves to propagate collinearly, with phases coherently correlated. The manipulation of the conversion efficiency is then possible with the phase control of the input fields. The combined second-harmonic fields are shown to be conveniently and robustly variable from zero to a maximum value that greatly exceeds the second-harmonic field generated by a single laser beam. By using a self-adaptive control algorithm, it is possible to optimize the output without prior knowledge on each beamlet property. Either the second-harmonic output beam profile or the total second-harmonic output power can be optimized with the control algorithm.

© 2010 OSA

OCIS Codes
(140.3298) Lasers and laser optics : Laser beam combining
(140.3535) Lasers and laser optics : Lasers, phase conjugate
(190.4223) Nonlinear optics : Nonlinear wave mixing
(110.1080) Imaging systems : Active or adaptive optics

ToC Category:
Nonlinear Optics

Original Manuscript: December 14, 2009
Revised Manuscript: January 22, 2010
Manuscript Accepted: January 24, 2010
Published: January 27, 2010

Peiqing Zhang, Yefeng Guan, Xiangsheng Xie, Jianying Zhou, Li Yan, and Kam Sing Wong, "Phase controlled beam combining with nonlinear frequency conversion," Opt. Express 18, 2995-2999 (2010)

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