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Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

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Published on: June 8, 2018

Beating spatio-temporal coupling: implications for pulse shaping and coherent control experiments.

Daan Brinks1, Richard Hildner, Fernando D Stefani

  • 1ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, Barcelona, Spain. daan.brinks@icfo.es

Optics Express
|January 26, 2012
PubMed
Summary
This summary is machine-generated.

Controlling ultrafast laser pulses is limited by diffraction, causing errors in pulse shaping. A new double-pass scheme significantly reduces these errors, enabling artifact-free pulse shaping even at the nanoscale.

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Area of Science:

  • Ultrafast optics
  • Quantum control
  • Nanophotonics

Background:

  • Diffraction of finite laser beams limits control over ultrafast pulses.
  • Spatio-temporal coupling is induced in standard pulse shaping schemes, affecting experiments.
  • Excitation, sample, and detection volumes are critical in coherent control.

Purpose of the Study:

  • To demonstrate the influence of diffraction-induced spatio-temporal coupling on coherent control.
  • To introduce a novel pulse shaping scheme to mitigate these errors.
  • To validate the scheme's performance using nanoscale probes.

Main Methods:

  • Investigated spatio-temporal coupling in standard pulse shaping.
  • Developed and implemented a double-pass pulse shaping scheme.
  • Utilized single molecules as nanoscale probes for validation.

Main Results:

  • Spatio-temporal coupling errors were reduced by over an order of magnitude with the double-pass scheme.
  • Artifact-free pulse shaping was achieved at dimensions two orders of magnitude smaller than the diffraction limit.
  • Single-molecule experiments confirmed the scheme's effectiveness.

Conclusions:

  • The double-pass scheme effectively minimizes spatio-temporal coupling errors in ultrafast pulse shaping.
  • This technique enables high-fidelity coherent control at the nanoscale.
  • The findings advance the precision of optical experiments involving ultrafast phenomena.