一种用于超短脉冲产生的新型可饱和吸收材料黑磷
Black phosphorus a new saturable absorber material for ultrashort pulse generation
摘要：
低维材料，由于其多功能的性能是非常有趣的许多电子和光电子应用。最近重新发现的黑磷，具有类似石墨的结构，可以剥离到单原子层。与石墨烯相反，它具有可由堆叠原子层的数量控制的直接带隙。出于这些原因，目前正在进行深入调查。在这里，我们证明，黑磷可以作为一个宽带可饱和吸收体，可用于超短光脉冲的产生。将机械剥离的~300 nm厚的黑磷层转移到光纤芯上，在1560 nm波长的脉冲激发下，其透射率增加了4.4%。它被用来产生272 fs-短脉冲在1550 nm和739 fs在1910 nm。结果表明，黑磷可以有效地用于超短脉冲的产生，并证明了其巨大的应用潜力。
英文摘要：
Low-dimensional materials, due to their versatile properties are very interesting for numerous electronics and optoelectronics applications. Recently rediscovered black phosphorus, with a graphite-like structure can be exfoliated up to the single atomic layer. In contrary to graphene it possesses a direct band gap controllable by the number of stacked atomic layers. For those reasons, it is now intensively investigated. Here we demonstrate, that black phosphorus can serve as a broadband saturable absorber and can be used for ultrashort optical pulse generation. The mechanically exfoliated ~300 nm thick layers of black phosphorus were transferred onto the fiber core and under pulsed excitation at 1560 nm wavelength its transmission increases by 4.4%. It was used to generate 272 fs-short pulses at 1550 nm and 739 fs at 1910 nm. The obtained results shows that black phosphorus can be effectively used for ultrashort pulse generation and proves its great potential to future applications.
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