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Related Experiment Video

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Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

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Self-similar pulse evolution in an all-normal-dispersion laser.

William H Renninger¹, Andy Chong, Frank W Wise

¹Department of Applied Physics, Cornell University, 212 Clark Hall, Ithaca, New York 14853, USA.

Physical Review. A, Atomic, Molecular, and Optical Physics

|July 19, 2011

Summary

Parabolic amplifier similaritons were observed in a normal-dispersion laser, acting as a nonlinear attractor. This study achieved high-energy parabolic output pulses and the shortest pulses from such lasers.

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Area of Science:

Nonlinear optics
Laser physics
Optical solitons

Background:

Similaritons are self-similar light wave solutions.
Normal-dispersion lasers typically produce different pulse dynamics.

Purpose of the Study:

To observe and characterize parabolic amplifier similaritons in a normal-dispersion laser.
To investigate the spectral and temporal properties of these similaritons.

Main Methods:

Experimental observation of similaritons within a laser cavity.
Numerical simulations to validate experimental findings.

Main Results:

Demonstrated parabolic amplifier similaritons as local nonlinear attractors.
Observed significant spectral breathing (20x) and low pulse chirp.
Achieved high-energy parabolic output pulses.
Generated the shortest pulses to date from a normal-dispersion laser.

Conclusions:

Parabolic amplifier similaritons can form and evolve in normal-dispersion lasers.
These similaritons offer practical advantages for generating high-energy, ultrashort pulses.