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Simulation Study on Spectral Beam Combining of Fiber Lasers
Author(s): 
Pages: 1144-1148
Year: Issue:  11
Journal: LASER & INFRARED

Keyword:  光纤激光频谱组束透射体布拉格光栅光栅参数衍射效率;
Abstract: 基于利用透射体布拉格光栅+准直透镜所设计的非相干组束方案,建立了光纤激光组束的理论模型.依据所建模型,对光栅的组束效果进行了分析.结果表明:最佳组束时,不同的光栅厚度须选择不同的光栅参数;随着光栅厚度的减小,满足最佳组束条件的空间频率和折射率调制将逐渐增大;在折射率调制和空间频率不变的情况下,随着光栅厚度的减小,角或谱的选择性逐渐增大;随着光束发散角和光谱宽度的增大,衍射效率逐渐减小.
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