Furthermore, in the approximations of the exact phase matching, compared with the ideal case, the frequency-doubling efficiency reduced by multi-optical coatings is not more than 6%.
在近似相位匹配下，倍频效率相对于理想情况降低幅度不超过6%。
The structure of the invention can be used for producing basic-frequency light and frequency doubling light, in particular high-efficiency frequency doubling light.
本发明的结构可用于产生基频光、倍频光，特别是高效倍频光。
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