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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Intra-cavity pumped Yb:YAG thin-disk laser with 1.74% quantum defect.
Optics Letters
|October 16, 2015
Summary
Researchers developed the first intra-cavity pumped Ytterbium-doped Yttrium Aluminum Garnet (Yb:YAG) thin-disk laser. This novel laser operates efficiently at 1050.7 nm with a low quantum defect, achieving 10.3 W output power.
Area of Science:
- Laser physics
- Materials science
Background:
- Thin-disk lasers offer advantages in high-power applications.
- Yb:YAG is a promising material for efficient laser operation.
- Achieving low quantum defect is crucial for high-efficiency lasers.
Purpose of the Study:
- To demonstrate the first intra-cavity pumped Yb:YAG thin-disk laser.
- To achieve efficient laser operation with a low quantum defect.
- To overcome challenges associated with low pump light absorption.
Main Methods:
- Intra-cavity pumping configuration was employed.
- A Yb:YAG thin disk was placed inside the resonator of a diode-pumped Yb:YAG thin-disk laser.
- Pumping was performed at 1032.4 nm, with the laser operating at 1050.7 nm.
Main Results:
- The intra-cavity pumped Yb:YAG thin-disk laser achieved an output power of 10.3 W.
- A slope efficiency of 8.3% was recorded.
- A low quantum defect of 1.74% was realized due to pumping at 1032.4 nm.
Conclusions:
- Intra-cavity pumping is an effective method to enhance efficiency in Yb:YAG thin-disk lasers.
- This approach compensates for low pump absorption, enabling efficient operation.
- The demonstrated laser represents a significant advancement in high-power laser technology.
