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Nonlinear effects on the carrier-envelope phase.

Peter M Goorjian1, Steven T Cundiff

  • 1NASA Ames Research Center, M.S. 19-44, Moffett Field, California 94035-1000, USA. pmgoorjian@arc.nasa.gov

Optics Letters
|July 6, 2004
PubMed
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Nonlinear effects alter the carrier-envelope phase of light pulses in sapphire. Strong nonlinearities cause a phase change reversal, differing from instantaneous response models.

Area of Science:

  • Nonlinear Optics
  • Quantum Optics
  • Solid-State Physics

Background:

  • Understanding light-matter interactions is crucial for optical technologies.
  • Carrier-envelope phase (CEP) stability is vital for ultrafast laser applications.
  • Nonlinear optical effects in solids like sapphire influence pulse propagation.

Purpose of the Study:

  • To investigate nonlinear effects on the carrier-envelope phase (CEP) of ultrashort pulses in sapphire.
  • To analyze CEP dynamics for two-optical-cycle pulse durations.
  • To explore the impact of pulse intensity on CEP evolution.

Main Methods:

  • Utilized Maxwell equations for theoretical calculations.
  • Modeled nonlinear effects, including Kerr nonlinearity.

Related Experiment Videos

  • Simulated pulse propagation in sapphire for two-optical-cycle durations.

    • Main Results:

    • Initially, increasing pulse intensity monotonically increases the CEP.
    • At higher intensities, a phase change reversal occurs due to envelope warping.
    • The Kerr nonlinear response (approx. 1 fs) significantly impacts CEP dynamics.

    Conclusions:

    • Strong nonlinear effects in sapphire lead to complex CEP behavior.
    • The finite response time of Kerr nonlinearity is critical for accurate CEP predictions.
    • These findings are essential for designing advanced ultrafast optical systems.