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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 19 — Sep. 14, 2009
  • pp: 16696–16709

Interferometric adaptive optics testbed for laser pointing, wave-front control and phasing

K.L. Baker, D. Homoelle, E. Utternback, E.A. Stappaerts, C.W. Siders, and C.P.J. Barty  »View Author Affiliations

Optics Express, Vol. 17, Issue 19, pp. 16696-16709 (2009)

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Implementing the capability to perform fast ignition experiments, as well as, radiography experiments on the National Ignition Facility (NIF) places stringent requirements on the control of each of the beam’s pointing, intra-beam phasing and overall wave-front quality. In this article experimental results are presented which were taken on an interferometric adaptive optics testbed that was designed and built to test the capabilities of such a system to control phasing, pointing and higher order beam aberrations. These measurements included quantification of the reduction in Strehl ratio incurred when using the MEMS device to correct for pointing errors in the system. The interferometric adaptive optics system achieved a Strehl ratio of 0.83 when correcting for a piston, tip/tilt error between two adjacent rectangular apertures, the geometry expected for the National ignition Facility. The interferometric adaptive optics system also achieved a Strehl ratio of 0.66 when used to correct for a phase plate aberration of similar magnitude as expected from simulations of the ARC beam line. All of these corrections included measuring both the upstream and downstream aberrations in the testbed and applying the sum of these two measurements in open-loop to the MEMS deformable mirror.

© 2009 OSA

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.7350) Atmospheric and oceanic optics : Wave-front sensing

ToC Category:
Adaptive Optics

Original Manuscript: July 2, 2009
Revised Manuscript: August 4, 2009
Manuscript Accepted: August 10, 2009
Published: September 3, 2009

K. L. Baker, D. Homoelle, E. Utternback, E. A. Stappaerts, C. W. Siders, and C. P. J. Barty, "Interferometric adaptive optics testbed for laser pointing, wave-front control and phasing," Opt. Express 17, 16696-16709 (2009)

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