Demonstration of 1.5-kW large-core step-index Yb-doped fiber amplifier near 980 nm

Key Points

• The large-core step-index Yb-doped fiber amplifier achieves a power output of 1.5 kW, demonstrating significant efficiency.
• Measurements show that the amplifier operates effectively at wavelengths near 980 nm, vital for various applications.
• Experimental analysis using precise laser techniques validates the performance and stability of the fiber amplifier.
• These findings may enhance the capacity for high-power laser systems, advancing optical technologies.