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Updated: Jun 22, 2026
07:42
Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
Published on: December 15, 2021
Summary
We developed chirped dielectric multilayer mirrors (CMs) for precise control of light dispersion. These mirrors achieve high reflectivity and minimal distortion, ideal for generating high-contrast femtosecond pulses.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Precise control over optical dispersion is crucial for ultrafast laser systems.
- Existing dispersion compensation techniques can introduce pulse distortions or limitations.
Purpose of the Study:
- To demonstrate a chirped dielectric multilayer mirror (CM) for controlled reflectivity and dispersion.
- To evaluate the performance of these mirrors in femtosecond pulse manipulation.
Main Methods:
- Fabrication of chirped dielectric multilayer mirrors.
- Characterization of reflectivity and group delay dispersion (GDD) in the 760-840 nm range.
- Simulations of pulse propagation through a dispersive delay line using these mirrors.
Main Results:
- Mirrors exhibit reflectivity >99.9% and mean GDD of approximately -30 fs^2.
- Theoretical GDD ripple is <0.5 fs^2, with measured deviations < +/- 3 fs^2.
- Simulations show negligible pulse distortion and contrast preservation with 120 bounces.
Conclusions:
- Chirped dielectric multilayer mirrors offer precise dispersion control.
- These mirrors are suitable for intracavity or extracavity dispersion management.
- They are particularly valuable for generating high-contrast femtosecond pulses.
