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Related Experiment Videos

Power-scalable subcycle pulses from laser filaments.

A A Voronin1,2,3,4, A M Zheltikov1,2,3,4

  • 1Physics Department, International Laser Center, M. V. Lomonosov Moscow State University, Moscow 119992, Russia.

Scientific Reports
|April 4, 2017
PubMed
Summary

This study demonstrates novel strategies for scaling ultrashort laser pulse compression. These methods enable generating subcycle field waveforms without degrading beam quality across a wide range of peak powers.

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Area of Science:

  • Nonlinear Optics
  • Laser Science
  • Ultrafast Photonics

Background:

  • Optical pulse compression is vital in laser science but scaling to high peak powers is limited by self-focusing principles.
  • The ratio of peak power (P) to critical power (Pcr) is a key factor in laser-induced filamentation, traditionally requiring constant values for power scaling.

Purpose of the Study:

  • To investigate novel scaling strategies for ultrashort laser pulse compression beyond the conventional constant P/Pcr principle.
  • To achieve scalable generation of subcycle field waveforms with high peak powers and maintained beam quality.

Main Methods:

  • Exploration of filamentation-assisted self-compression in the anomalous dispersion regime.
  • Identification of specific scaling strategies for ultrashort laser pulses.

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Main Results:

  • Demonstrated that filamentation-assisted self-compression can be scaled against the constant P/Pcr principle.
  • Identified strategies to generate subcycle field waveforms with nearly constant pulse widths.
  • Achieved scalability across a broad range of peak powers (few to hundreds of Pcr) without significant beam quality degradation.

Conclusions:

  • Filamentation self-compression offers a viable pathway for scaling ultrashort laser pulse generation to higher peak powers.
  • The identified strategies overcome traditional limitations, enabling robust generation of high-intensity, ultrashort optical pulses.