Abstract

为了实现2.1 μm波段光纤激光器输出多波长激光,设计了一种基于光纤Sagnac干涉仪的可调谐多波长掺钬光纤激光器。采用1.9 μm波段掺铥光纤激光器泵浦一段长3 m的掺钬石英光纤,获得2.1 μm波段的光放大;环形腔中,由保偏光纤和偏振控制器构成的光纤Sagnac干涉仪,实现2.1 μm波段周期滤波,获得了2.1 μm波段多波长激光,输出功率1 mW~15 mW可调谐,最多可观测到6个波长的激光输出。通过调节环形腔内偏振控制器,能够实现2.1 μm波段1~6个波长的调谐。

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