石墨烯纳米带纳米团簇的栅极可调光学消光
Gate-Tunable Optical Extinction of Graphene Nanoribbon Nanoclusters
AI总结：
本文利用LaAlO3/SrTiO3界面纳米结研究石墨烯纳米带纳米团簇的光学响应，发现其具有栅极可调的二阶、三阶谐波和可见-近红外强消光特性。
摘要：
我们利用在LaAlO$_3$/SrTiO$_3$界面处形成的纳米级结的宽带非线性产生与探测能力，研究了石墨烯纳米带（GNRs）的光学响应。通过原子力显微镜针尖将测得尺寸小至1-2个GNR的GNR纳米团簇沉积在LaAlO$_3$表面上。对GNR纳米团簇的时间分辨非线性光学探测揭示了强烈的、栅极可调的二阶和三阶谐波响应，以及在特定波长处对可见光至近红外（VIS-NIR）光的强烈消光，这与先前关于石墨烯的报道相似。
英文摘要：
We investigate the optical response of graphene nanoribbons (GNRs) using the broadband nonlinear generation and detection capabilities of nanoscale junctions created at the LaAlO$_3$/SrTiO$_3$ interface. GNR nanoclusters measured to be as small as 1-2 GNRs in size are deposited on the LaAlO$_3$ surface with an atomic force microscope tip. Time-resolved nonlinear optical probes of GNR nanoclusters reveal a strong, gate-tunable second and third harmonic response, as well as strong extinction of visible to near-infrared (VIS-NIR) light at distinct wavelengths, similar to previous reports with graphene.
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