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

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Continuous wave and mode-locked Yb3+:Y2O3 ceramic thin disk laser.

Masaki Tokurakawa¹, Akira Shirakawa, Ken-ichi Ueda

¹Institute for Laser Science, University of Electro-Communications, Tokyo, Japan. tokura@ils.uec.ac.jp

|May 9, 2012

Summary

High-power continuous-wave (CW) and mode-locked laser operations were achieved using Ytterbium-doped Yttrium Oxide (Yb3+:Y2O3) ceramic thin disks. This research demonstrates the potential of these ceramic disks for advanced laser applications.

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Area of Science:

Laser Physics
Materials Science
Solid-State Lasers

Background:

Ytterbium-doped Yttrium Oxide (Yb3+:Y2O3) ceramics are promising gain media for high-power lasers.
Thin disk laser architectures offer excellent thermal management for high-power operation.

Purpose of the Study:

To investigate continuous-wave (CW) and mode-locked laser operation using an Yb3+:Y2O3 ceramic thin disk.
To evaluate the performance metrics, including output power, efficiency, and pulse duration.

Main Methods:

Fabrication and characterization of an Yb3+:Y2O3 ceramic thin disk.
Experimental setup for CW and mode-locked laser operation.
Optimization of pump parameters and resonator configuration.

Main Results:

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Achieved 70 W CW output power with 57.4% optical-to-optical efficiency.
Obtained a higher slope efficiency of 70% with a tailored 50-W pump diode.
Generated ultrashort pulses of 547 fs with 7.4 W average power in mode-locked operation.

Conclusions:

This study presents the first demonstration of high-power CW and mode-locked laser operation using Yb3+:Y2O3 ceramic thin disks.
Yb3+:Y2O3 ceramic thin disks are highly effective gain media for both CW and mode-locked laser systems.
The results highlight the potential for developing advanced, high-performance lasers based on this material.