Results showed that it was realizable by taking such measures as using high inner-clad numerical aperture, appropriate rare-earth doped double-clad fiber and decreasing transmission loss of sunlight.

• 计算结果表明，通过采用内包层数值孔径较大、掺杂适当稀土元素的双包层光纤及减小太阳光传输过程中的损耗等措施提高光纤激光器对太阳能的吸收效率，可以实现太阳能直接抽运光纤激光器。