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Cladding-pumped passive harmonically mode-locked fiber laser.

M E Fermann, J D Minelly

|October 31, 2009

Summary

This summary is machine-generated.

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This study details a passively harmonically mode-locked fiber laser, achieving high-frequency operation and stable, short pulses. Researchers optimized output power and minimized pulse jitter for advanced laser applications.

Area of Science:

Optics and Photonics
Laser Physics
Materials Science

Background:

Fiber lasers are crucial for various applications, but achieving high-frequency, stable mode-locking remains a challenge.
Passive harmonic mode-locking offers a pathway to high repetition rates without complex active modulation.
Diode-laser pumping provides a compact and efficient energy source for laser systems.

Purpose of the Study:

To describe a passively harmonically mode-locked fiber laser.
To investigate the performance characteristics, including operating frequency range, pulse stability, and output power.
To explore the limitations imposed by pump power on the laser's performance.

Main Methods:

Utilized a fiber laser architecture.
Employed passive harmonic mode-locking techniques.

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Last Updated: Jun 19, 2026

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

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Pumped the laser using a broad-area diode-laser array.

Main Results:

Achieved harmonic mode-locking in the frequency range of 33.3 to 128.6 MHz.
Observed maximum pulse jitter between 300 and 50 picoseconds (ps) within the operating frequency range.
Generated 600-femtosecond (fs) bandwidth-limited pulses with energies up to 20 picojoules (pJ), resulting in an average output power of 2.5 milliwatts (mW).

Conclusions:

The described fiber laser demonstrates effective passive harmonic mode-locking.
Pump power availability limits the higher frequency operation.
The laser produces high-quality, short pulses with low jitter and significant sideband suppression, suitable for demanding applications.