论文标题
石墨烯可调宽带光发射
Tunable broadband light emission from graphene
论文作者
论文摘要
石墨烯是集成非线性光学元件的理想材料，这是由于其强烈的光 - 敏感性和较大的非线性光学敏感性。石墨烯已用于光学调节剂，可饱和吸收器，非线性频率转换器和宽带光发射器。对于后一种应用，关键要求是能够控制和设计发射波长和带宽以及石墨烯的电子温度。在这里，我们证明了石墨烯$'$ s宽带热载体光致发光的发射波长可以通过在光子腔上的集成来调节，而可以通过非平面热传递到六边形的硝酸氢硼来实现热管理。我们的结果为基于石墨烯的超快宽带光发射器铺平了道路。
Graphene is an ideal material for integrated nonlinear optics thanks to its strong light-matter interaction and large nonlinear optical susceptibility. Graphene has been used in optical modulators, saturable absorbers, nonlinear frequency converters, and broadband light emitters. For the latter application, a key requirement is the ability to control and engineer the emission wavelength and bandwidth, as well as the electronic temperature of graphene. Here, we demonstrate that the emission wavelength of graphene$'$ s broadband hot carrier photoluminescence can be tuned by integration on photonic cavities, while thermal management can be achieved by out-of-plane heat transfer to hexagonal boron nitride. Our results pave the way to graphene-based ultrafast broadband light emitters with tunable emission.
