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Dispersion scan frequency resolved optical gating for consistency check of pulse retrieval
Mariem Guesmi1, Petra Veselá1, Karel Žídek1
1Regional Center for Special Optics and Optoelectronic Systems (TOPTEC), Institute of Plasma Physics, Czech Academy of Science v.v.i., Za Slovankou 1782/3, 182 00 Prague 8, Czech Republic.
The Review of Scientific Instruments
|April 2, 2024
Summary
Dispersion-scan FROG (D-FROG) effectively identifies ultrafast laser pulse shape variations. This new method enhances traditional frequency-resolved optical gating (FROG) for more accurate laser pulse characterization.
Area of Science:
- Ultrafast optics
- Laser pulse characterization
- Nonlinear optics
Background:
- Traditional ultrafast laser pulse characterization methods like FROG and d-scan struggle with spatially or temporally varying pulse shapes.
- Variations in pulse shape can cause discrepancies between experimental and reconstructed data, making them difficult to detect.
Purpose of the Study:
- To develop and validate a new method for discerning variations in ultrafast laser pulse shapes.
- To provide a reliable consistency check for existing pulse characterization techniques.
Main Methods:
- Introduced dispersion-scan FROG (D-FROG), combining dispersion scanning with FROG.
- Utilized a set of FROG traces linked by controlled dispersion changes for analysis.
Main Results:
- D-FROG effectively identifies and discerns pulse shape variations that are problematic for standard FROG.
- The method can reveal inaccuracies in pulse retrievals from distorted datasets.
Conclusions:
- D-FROG serves as a robust extension to FROG for enhanced laser pulse characterization.
- This technique offers a critical consistency check to identify limitations in current pulse measurement methods.
