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Updated: Feb 25, 2026

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

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Electro-optically controlled divided-pulse amplification.

Henning Stark, Michael Müller, Marco Kienel

|August 10, 2017

Summary

This summary is machine-generated.

A new divided-pulse amplification technique boosts laser peak power and pulse energy. This method uses a fiber-coupled system for high stability and efficient pulse combination, overcoming current limitations.

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Last Updated: Feb 25, 2026

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Area of Science:

Laser physics
Optical engineering

Background:

Pulsed laser systems face limitations in peak power and pulse energy scaling.
Existing amplification techniques struggle with gain saturation and nonlinear phase mismatches.

Purpose of the Study:

To present a novel divided-pulse amplification technique.
To demonstrate high combination efficiency and pulse contrast.
To enable scaling of pulsed laser systems beyond current limits.

Main Methods:

A pulse burst is extracted from a mode-locked oscillator's pulse train.
The pulse burst is amplified.
Individual pulses are temporally combined into a single pulse.
The system is primarily fiber-coupled for enhanced stability.

Main Results:

High combination efficiency achieved.
Excellent pulse contrast demonstrated.
Access to individual pulse amplitude and phase for potential compensation of gain saturation and nonlinear phase mismatches.

Conclusions:

The divided-pulse amplification technique offers a viable method for increasing laser peak power and pulse energy.
The fiber-coupled design ensures high interferometric stability.
This approach allows for compensation of detrimental effects during amplification, enabling significant performance scaling.