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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 10,
  • Issue 2,
  • pp. 021401-
  • (2012)

Beam cleanup of a 532-nm pulsed solid-state laser using a bimorph mirror

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Abstract

A successful beam cleanup of a 5-mJ/200-µs pulsed solid-state laser system operating at 532-nm wavelength is demonstrated. In this beam cleanup system, a wave-front sensor-less adaptive optics (AO) system is set up with a 20-element bimorph mirror (BM), a high-voltage amplifier, a charge-coupled device camera, and a control software implementing the stochastic parallel gradient descent (SPGD) algorithm. The brightness of the laser focal spot is improved because the wave-front distortions have been compensated. The performance of this system is presented and the experimental results are analyzed.

© 2012 Chinese Optics Letters

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