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Nonlinear pulse compression based on a gas-filled multipass cell.
Optics Letters
|May 16, 2018
Summary
High-energy Ytterbium-doped fiber laser pulses were compressed from 275 fs to 33 fs using nonlinear temporal compression in argon gas. This technique shows promise for scaling to even higher energies and shorter durations for ultrafast laser applications.
Area of Science:
- Ultrafast laser science
- Nonlinear optics
- Fiber laser technology
Background:
- High-energy ultrafast laser sources are crucial for scientific research and applications.
- Temporal compression of laser pulses is essential for achieving shorter durations and higher peak powers.
- Yb-doped fiber lasers offer advantages in terms of robustness and scalability.
Purpose of the Study:
- To demonstrate nonlinear temporal compression of high-energy Yb-doped fiber laser pulses.
- To investigate the scalability of this compression technique.
- To analyze the characteristics of the compressed output pulses.
Main Methods:
- Utilized a multipass cell filled with argon gas for nonlinear temporal compression.
- Employed a high-energy Yb-doped fiber laser source producing 160 μJ, 275 fs pulses.
- Analyzed the output beam for space-time couplings.
Main Results:
- Achieved pulse compression down to 33 fs with an output energy of 135 μJ.
- Obtained an overall transmission efficiency of 85% for the compression process.
- Observed essentially no space-time couplings in the output beam.
Conclusions:
- Nonlinear temporal compression in argon is an effective method for shortening high-energy Yb-doped fiber laser pulses.
- The demonstrated technique is potentially scalable to higher pulse energies and shorter pulse durations.
- This advancement enables broader parameter ranges for various ultrafast laser sources.
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