A multi-pass pumping scheme for thin disk lasers with good anti-disturbance ability

Area of Science:

• Optics and Photonics
• Laser Physics
• Materials Science

Background:

• Thin disk lasers are crucial for high-power applications.
• Efficient pumping schemes are essential for laser performance and stability.
• Existing multi-pass pumping methods face challenges with disturbance rejection.

Purpose of the Study:

• To present a novel multi-pass pumping scheme for thin disk lasers.
• To analyze the anti-disturbance ability of the proposed pumping scheme.
• To compare its performance against conventional methods.

Main Methods:

• A multi-pass pumping scheme utilizing dual parabolic mirrors with a conjugated relationship was designed.
• Ray tracing simulations were employed to analyze the anti-disturbance capabilities under various disturbances.
• Theoretical analysis and experimental validation were conducted.

Main Results:

• Disturbances do not cause misalignment of individual pumping spots in the proposed system.
• The position of the superposed pumping spot on the disk crystal is the primary effect of disturbances.
• The dual parabolic mirror scheme exhibits enhanced anti-disturbance ability compared to systems using folding prisms.

Conclusions:

• The presented dual parabolic mirror multi-pass pumping scheme offers improved stability for thin disk lasers.
• This design is more resilient to external disturbances than traditional pumping configurations.
• The findings are significant for developing robust high-power laser systems.