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260-megahertz, megawatt-level thin-disk oscillator.

Jinwei Zhang, Jonathan Brons, Nikolai Lilienfein

|April 15, 2015

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This study presents a Kerr-lens mode-locked Yb:YAG thin-disk laser, achieving 215-fs pulses at 260 MHz. This high repetition rate advances ultrafast laser technology for various applications.

Area of Science:

Laser Physics
Materials Science

Background:

Thin-disk lasers offer excellent thermal management for high-power operation.
Kerr-lens mode-locking (KLM) is a crucial technique for generating ultrashort laser pulses.

Purpose of the Study:

To demonstrate a high-repetition-rate Kerr-lens mode-locked Yb:YAG thin-disk oscillator.
To achieve ultrashort pulse durations with high average power.

Main Methods:

Utilized a Yb:YAG thin-disk gain medium.
Implemented Kerr-lens mode-locking (KLM) for ultrashort pulse generation.
Operated the oscillator at a repetition rate of 260 MHz.

Main Results:

Delivered 215-fs pulses with 75-W average power and 1.4-MW peak power.

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

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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

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Achieved self-starting KLM at 68 W output power.

Demonstrated the highest repetition rate for mode-locked thin-disk oscillators to date.

Conclusions:

The developed Yb:YAG thin-disk oscillator represents a significant advancement in high-repetition-rate ultrafast laser systems.
The results pave the way for scaling to even higher repetition rates (up to 1 GHz).
This technology has potential applications in fields requiring high-power, ultrashort pulses.