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Adaptive pulse shaping PowerPoint Presentation
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Adaptive pulse shaping

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Adaptive pulse shaping

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  1. Adaptive pulse shaping

  2. Femtosecond pulse shaping

  3. Evolutionary algorithm

  4. Applications of adaptive pulse shaping

  5. high harmonic generation

  6. Objective: Control HHG (I.) atoms/molecules/ clusters/droplets shaped (II.) atoms soft x-ray detector fs-laser pulse

  7. Three-step model P. Corkum, Phys. Rev. Lett. 71, 1994 (1993)

  8. Harmonic generation geometry Atomic/ molecular jet XUV- detector fs-laser pulse capillary A. Rundquist et al. Science 280, 1412 (1998)

  9. Experimental setup

  10. Harmonic enhancement fitness: ~ ~ green2 red fittest pulse shape average fitness unshaped pulse / reference signal 25 23 27 27 25 23 efficiency: 106 photons/pulse in a single harmonic!

  11. selective enhancement of HHG

  12. Phase-matching experiment vacuum propagation material dispersion plasma dispersion waveguide dispersion A. Rundquist et al. Science 280, 1412 (1998) wavelength [nm] simulation

  13. Selective Control of HHG

  14. High-harmonic generation Atomic/ molecular jet XUV- detector shaped fs-laser pulse capillary A. Rundquist et al. Science 280, 1412 (1998)

  15. generation geometry jet vs. capillary B A B B A B Fitness: F = A / B control not only governed by the single atom response

  16. Summary Selective Enhancement Comprehensive Control Control beyond theatomic dipole phase Attosecond Quantum Control