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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

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High-power, 1-ps, all-Yb:YAG thin-disk regenerative amplifier.

Hanieh Fattahi, Ayman Alismail, Haochuan Wang

|March 16, 2016

Summary

We developed a high-power Yb:YAG thin-disk regenerative amplifier, delivering 100 W average power with ultrastable output. This system is ideal for pumping optical parametric amplifiers, advancing laser technology.

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Area of Science:

Laser Physics
Materials Science

Background:

High-power ultrafast lasers are crucial for scientific research and industrial applications.
Yb:YAG thin-disk lasers offer excellent thermal management and high-power scalability.

Purpose of the Study:

To develop a high-power, ultrastable all-Yb:YAG thin-disk regenerative amplifier.
To demonstrate its capability for efficient second harmonic generation.

Main Methods:

A chirped pulse amplification system was implemented using an Yb:YAG thin-disk Kerr-lens mode-locked oscillator as a seed.
The regenerative amplifier operated at ambient temperature in air with a 5 kHz repetition rate.
Second harmonic generation was performed using a 1.5 mm-thick BBO crystal.

Main Results:

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Achieved 100 W average power, 20 mJ pulse energy, and 1-ps pulse duration.
Demonstrated ultrastable output with less than 0.5% root mean square power noise.
Generated over 70 W at 515 nm via second harmonic generation.

Conclusions:

The developed Yb:YAG thin-disk regenerative amplifier is a highly stable and powerful laser source.
Its efficient second harmonic generation makes it suitable for pumping optical parametric chirped pulse amplifiers.
This system advances capabilities for applications requiring high-energy visible and near-infrared pulses.