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Mode locking with cross-phase and self-phase modulation.

M Hofer, M E Fermann, F Haberl

|September 24, 2009

Summary

This summary is machine-generated.

High-power fiber lasers achieve self-sustained mode locking using cross-phase and self-phase modulation. This generates stable, ultrashort pulses of 70 femtoseconds with 1 nanojoule energy.

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Published on: November 22, 2019

Area of Science:

Optics and Photonics
Laser Physics

Background:

Mode-locked lasers are crucial for generating ultrashort pulses.
High-power fiber lasers offer advantages in scalability and beam quality.

Purpose of the Study:

To investigate self-sustained mode locking in high-power neodymium glass fiber lasers.
To achieve generation of stable, ultrashort laser pulses.

Main Methods:

Utilizing cross-phase modulation (XPM) and self-phase modulation (SPM).
Employing a neodymium glass fiber laser system.

Main Results:

Stable, self-sustained mode locking was achieved.
Ultrashort pulses with a full width at half maximum (FWHM) of 70 femtoseconds were generated.
Pulse energies reached up to 1 nanojoule (nJ) at a 1.064 micrometer wavelength.

Conclusions:

Cross-phase and self-phase modulation are effective for self-sustained mode locking in high-power fiber lasers.
The developed method enables the generation of high-energy, femtosecond pulses.