6533b873fe1ef96bd12d564c
RESEARCH PRODUCT
Controlling the carrier-envelope phase of few-cycle focused laser beams with a dispersive beam expander
Miguel A. PorrasCarlos J. Zapata-rodríguezsubject
Materials sciencebusiness.industryCarrier-envelope phaseNonlinear opticsPhysics::OpticsFísicaLaser01 natural sciencesPulse shapingAtomic and Molecular Physics and Opticslaw.invention010309 opticsOpticslaw0103 physical sciencesGroup velocityWaveformBeam expanderPhase velocityOptica010306 general physicsbusinessdescription
We report on a procedure to focalize few-cycle laser pulses in dispersive media with controlled waveform. Stationarity of the carrier-envelope phase for extended depth of focus is attained by shaping the spatial dispersion of the ultrashort beam. An adjustable group velocity is locally tuned in order to match a prescribed phase velocity at focus. A hybrid diffractive-refractive lens system is proposed to drive the wavefield to an immersion microscope objective under convenient broadband modulation. Numerical simulations demonstrate robustness over positioning of this dispersive beam expander.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-12-01 |