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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 5 — Feb. 10, 2008
  • pp: 704–710

Optimization of the dynamic wavefront control of a pulsed kilojoule∕nanosecond-petawatt laser facility

Ji-Ping Zou, Anne-Marie Sautivet, Jérôme Fils, Luc Martin, Kahina Abdeli, Christian Sauteret, and Benoit Wattellier  »View Author Affiliations


Applied Optics, Vol. 47, Issue 5, pp. 704-710 (2008)
http://dx.doi.org/10.1364/AO.47.000704


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Abstract

The wavefront aberrations in a large-scale, flash-lamp-pumped, high-energy, high-power glass laser system can degrade considerably the quality of the final focal spot, and limit severely the repetition rate. The various aberrations induced on the Laboratoire pour l'Utilisation des Lasers Intenses (LULI), laser facility (LULI2000) throughout the amplification are identified and analyzed in detail. Based on these analyses, an optimized procedure for dynamic wavefront control is then designed and implemented. The lower-order Zernike aberrations can be effectively reduced by combining an adaptive-optics setup, comprising a bimorph deformable mirror and a four-wave lateral shearing interferometer, with a precise alignment system. This enables the laser chain to produce a reproducible focal spot close to the diffraction limit (Strehl ratio 0.7 ). This allows also to increase the repetition rate, initially limited by the recovery time of the laser amplifiers, by a factor of 2 (one shot per hour). The proposed procedure provides an attractive alternative for dynamic correction of the wavefront aberrations of a laser facility as complex as the LULI2000.

© 2008 Optical Society of America

OCIS Codes
(080.1010) Geometric optics : Aberrations (global)
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(140.5560) Lasers and laser optics : Pumping
(140.6810) Lasers and laser optics : Thermal effects
(140.3538) Lasers and laser optics : Lasers, pulsed

ToC Category:
Geometric optics

History
Original Manuscript: August 15, 2007
Revised Manuscript: November 23, 2007
Manuscript Accepted: November 24, 2007
Published: February 8, 2008

Citation
Ji-Ping Zou, Anne-Marie Sautivet, Jérôme Fils, Luc Martin, Kahina Abdeli, Christian Sauteret, and Benoit Wattellier, "Optimization of the dynamic wavefront control of a pulsed kilojoule/nanosecond-petawatt laser facility," Appl. Opt. 47, 704-710 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-5-704

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