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

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High-efficiency diode-pumped Nd:YVO(4) slab laser.

J E Bernard, A J Alcock

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Summary

This summary is machine-generated.

A new diode-bar, side-pumped laser cavity design achieved high optical-to-optical conversion efficiencies up to 32%. This novel approach with slab geometry and high-angle-of-incidence reflection enhances laser performance for efficient light generation.

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Area of Science:

Laser Physics
Materials Science

Background:

Efficient laser systems are crucial for various scientific and industrial applications.
Optimizing gain extraction and mode quality in solid-state lasers remains a key challenge.

Purpose of the Study:

To develop and evaluate a novel diode-bar, side-pumped laser cavity design.
To achieve high optical-to-optical conversion efficiency and improved beam quality.

Main Methods:

Utilized a slab geometry Nd:YVO(4) laser gain medium.
Employed a single, high-angle-of-incidence reflection for efficient gain extraction.
Implemented diode-bar side-pumping for strong absorption at the pump wavelength.

Main Results:

Achieved optical-to-optical conversion efficiencies as high as 32% and slope efficiencies of 44%.
Obtained small-signal gains exceeding 8 cm⁻¹ and pulse energies up to 3.2 mJ.
Demonstrated near-TEM(00) mode operation, with laser rod aperturing mitigating gain nonuniformity.

Conclusions:

The novel diode-bar, side-pumped laser cavity design significantly enhances laser performance.
Slab geometry and optimized gain extraction are effective for high-efficiency laser operation.
The design shows promise for developing powerful and efficient solid-state laser sources.