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Ultrafast pulse generation in a mode-locked Erbium chip waveguide laser
Optics Express
|December 2, 2016
Summary
This study presents ultra-fast laser inscribed waveguide lasers generating the shortest pulses and widest bandwidth. These advanced fiber lasers offer scalable repetition rates for diverse applications.
Area of Science:
- Optics and Photonics
- Laser Physics
- Materials Science
Background:
- Mode-locked lasers are crucial for various scientific and industrial applications.
- Erbium-doped glass lasers are widely used for generating ultrashort pulses.
- Waveguide lasers offer advantages in compactness and power handling.
Purpose of the Study:
- To demonstrate ultra-fast laser inscribed waveguide lasers with enhanced performance.
- To achieve mode-locked output with wide spectral bandwidth and short pulse duration.
- To investigate the scalability of such lasers to higher repetition rates.
Main Methods:
- Utilizing a large mode-area (50 μm diameter) guided-wave erbium fluorozirconate glass laser.
- Achieving passive mode-locking to generate ultrashort pulses.
- Employing numerical simulations based on the Ginzburg-Landau equation to analyze laser cavity dynamics.
Main Results:
- Generation of transform-limited ~180 fs pulses at 1550 nm with 25 nm bandwidth.
- Output peak power of 260 W at a 156 MHz repetition rate.
- Demonstrated scalability to 410 fs transform-limited pulses at a 1.3 GHz repetition rate.
Conclusions:
- This work reports the widest bandwidth and shortest pulses from an ultra-fast laser inscribed waveguide laser.
- The developed laser technology shows potential for high-repetition-rate ultrashort pulse generation.
- Numerical simulations provide insights into the physical mechanisms behind the broad spectral output.
