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Self-stabilized passive, harmonically mode-locked stretched-pulse erbium fiber ring laser
Optics Letters
|November 23, 2007
Summary
We developed a self-stabilized fiber laser producing stable, high-power picosecond pulses. These pulses are compressible to 125 femtoseconds, demonstrating advanced laser technology for various applications.
Area of Science:
- Photonics
- Laser Physics
- Optical Engineering
Background:
- Mode-locked fiber lasers are crucial for generating ultrashort optical pulses.
- Achieving stable, high-repetition-rate, high-power pulses remains a challenge.
- Net positive dispersion lasers offer unique operational characteristics.
Purpose of the Study:
- To investigate a passive, harmonically mode-locked, stretched-pulse erbium fiber ring laser.
- To achieve self-stabilization using gain depletion and electrostriction.
- To characterize the generated optical pulses for potential applications.
Main Methods:
- Utilized an erbium-doped fiber ring laser configuration.
- Implemented harmonically mode-locking and stretched-pulse operation.
- Employed gain depletion and electrostriction for self-stabilization.
- Performed external chirp compensation for pulse compression.
Main Results:
- Achieved stable, periodic pulse generation with supermode suppression exceeding 75 dB.
- Obtained pulses with picosecond jitter.
- Demonstrated pulse compressibility down to 125 femtoseconds.
- Generated pulses at a 220 MHz repetition rate with an average power of 80 mW.
Conclusions:
- The developed laser design offers a robust method for generating high-quality ultrashort pulses.
- Self-stabilization via gain depletion and electrostriction is effective for passive mode-locking.
- The high average power and compressibility make these pulses suitable for demanding applications.
