Passively synchronized two-color mode-locked fiber system based on master-slave lasers geometry

Area of Science:

• Optics and Photonics
• Laser Physics
• Fiber Lasers

Background:

• Mode-locked fiber lasers are crucial for various scientific applications.
• Synchronizing multiple lasers is essential for advanced research but challenging.
• Achieving robust synchronization with high tolerance for cavity mismatch is a significant hurdle.

Purpose of the Study:

• To achieve robust synchronization between two-color Erbium and Ytterbium mode-locked fiber lasers.
• To investigate the impact of nonlinear interactions on pulse-locking stability.
• To establish a new record for cavity mismatch tolerance in synchronized oscillators.

Main Methods:

• A master-slave configuration was employed for laser synchronization.
• Utilized Erbium and Ytterbium doped fiber lasers.
• Leveraged enhanced nonlinear interaction within the fiber for pulse-locking.

Main Results:

• Robust synchronization was successfully achieved for the two-color fiber laser system.
• Noise-free pulse-locking was obtained due to enhanced nonlinear interaction.
• A cavity mismatch tolerance of 140 micrometers was demonstrated, a record for synchronized oscillators.

Conclusions:

• The master-slave configuration provides a robust method for synchronizing mode-locked fiber lasers.
• Enhanced nonlinear fiber interaction enables high-tolerance, noise-free pulse-locking.
• This work sets a new benchmark for cavity-length mismatch tolerance in synchronized laser systems.