Consideration of Stimulated Raman Scattering in Yb:Sr(5)(PO(4))(3)F Laser Amplifiers

Area of Science:

• Laser physics
• Materials science

Background:

• Stimulated Raman scattering (SRS) is a nonlinear optical process that can limit laser amplifier performance.
• Yb:Sr(5)(PO(4))(3)F is a promising gain medium for lasers, but its SRS properties require characterization.

Purpose of the Study:

• To quantitatively measure the SRS gain coefficient in Yb:Sr(5)(PO(4))(3)F.
• To develop a predictive model for SRS effects in laser amplifiers utilizing this gain medium.
• To identify strategies for mitigating SRS-induced losses.

Main Methods:

• Quantitative measurement of the SRS gain coefficient at 1053 nm.
• Incorporation of measured gain, losses, reflections, saturation, and bandwidth into a predictive model.
• Analysis of model predictions to assess impact on laser amplifier performance.

Main Results:

• The SRS gain coefficient for Yb:Sr(5)(PO(4))(3)F was measured at 1.23 ± 0.12 cm/GW at 1053 nm.
• A quantitative model was developed to predict SRS effects in laser amplifiers.
• The study discusses limitations and impacts of SRS on amplifier performance.

Conclusions:

• The measured SRS gain coefficient provides essential data for understanding and managing SRS in Yb:Sr(5)(PO(4))(3)F laser systems.
• The developed model aids in predicting and mitigating SRS-related performance degradation.
• Potential techniques to reduce SRS loss are discussed, offering pathways for improved laser amplifier design.