Generation of femtosecond paraxial beams with arbitrary spatial distribution Academic Article uri icon

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abstract

  • We present an approach to generate paraxial laser beams with arbitrary spatial distribution in the femtosecond time regime. The proposed technique is based upon a pair of volume phase holographic gratings working in parallel arrangement. It exploits the spatial coherence properties of the incoming laser beam in a compact and robust setup that mitigates angular and spatial chirp. The gratings were recorded in a photopolymerizable glass with a high optical damage threshold and a large optical throughput. Setup performance is studied and experimentally demonstrated by generating Laguerre-Gaussian femtosecond pulses.

authors

  • Martínez-Matos, Ó
  • Rodrigo, José A
  • Hernández-Garay, MP
  • Izquierdo, JG
  • Weigand, R
  • Calvo, ML
  • Cheben, Pavel
  • Vaveliuk, P
  • Bañares, L

publication date

  • March 1, 2010