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Extremely simple device for measuring 20-fs pulses.

Selcuk Akturk1, Mark Kimmel, Patrick O'Shea

  • 1School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, USA. akturk@socrates.physics.gatech.edu

Optics Letters
|May 18, 2004
PubMed
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We developed a simple frequency-resolved optical-gating (FROG) device, GRENOUILLE, for measuring ultrashort laser pulses. This device accurately measures pulses with broad spectra and durations as short as 19 femtoseconds.

Area of Science:

  • Ultrafast optics
  • Nonlinear optics
  • Laser science

Background:

  • Characterizing ultrashort laser pulses is crucial for many scientific applications.
  • Existing methods for measuring pulse properties can be complex and limited in spectral range.
  • Frequency-resolved optical gating (FROG) is a powerful technique for pulse characterization.

Purpose of the Study:

  • To demonstrate a simplified FROG device for ultrashort pulse measurement.
  • To enable measurement of pulses with broad spectral bandwidths.
  • To achieve high accuracy in measuring short pulse durations.

Main Methods:

  • Development of a novel, nearly all-reflective GRENOUILLE device.
  • Utilizing a simple optical geometry to minimize dispersion.

Related Experiment Videos

  • Employing FROG principles for pulse characterization.

    • Main Results:

    • Demonstrated a GRENOUILLE device capable of measuring pulses with spectra wider than 100 nm.
    • Achieved accurate measurement of ultrashort pulses down to 19 femtoseconds.
    • The device's all-reflective design minimizes material dispersion effects.

    Conclusions:

    • The GRENOUILLE device offers a simple and effective method for ultrashort pulse characterization.
    • This technique is suitable for pulses with broad spectral content.
    • The minimized dispersion allows for precise measurement of femtosecond pulses.