高功率双包层光纤放大器

高功率双包层光纤放大器在光纤传感、光纤通讯、光谱测量和惯性约束聚变等领域有广泛应用。介绍了两种获得放大激光输出的高功率双包层光纤放大器：单频双包层光纤放大器和脉冲双包层光纤放大器。分析了它们的工作原理及关键技术，并对国内外近期进展作了综述。

High power double-clad fiber amplifiers have widespread applications in fiber sensing, fiber optical communication system，spectral measurement, inertial confinement fusion, and so on. Two kinds of high power double-clad fiber amplifiers are discussed. The principle and key techniques for single-frequency double-clad fiber amplifier and pulsed double-clad fiber amplifier are analyzed in detail. The latest progresses and development trends in the areas are reviewed.