【摘 要】
:
In graphene-based optoelectronic devices, the ultraweak interaction between a light and monolayer graphene leads to low optical absorption and low responsivity for the photodetectors and relative high half-wave voltage for the phase modulator. Here, an in
【机 构】
:
KeyLaboratoryofOptoelectronicInformationandSensingTechnologiesofGuangdongHigherEducationInstitutes,D
【出 处】
:
PhotonicsResearch
论文部分内容阅读
In graphene-based optoelectronic devices, the ultraweak interaction between a light and monolayer graphene leads to low optical absorption and low responsivity for the photodetectors and relative high half-wave voltage for the phase modulator. Here, an integration of the monolayer graphene onto the side-polished optical fiber is demonstrated, which is capable of providing a cost-effective strategy to enhance the light–graphene interaction, allowing us to obtain a highly efficient optical absorption in graphene and achieve multifunctions: photodetection and optical phase modulation. As a photodetector, the device has ultrahigh responsivity () and high external quantum efficiency (
其他文献
研制了三通道微通道板(MCP)门控X射线分幅相机,其MCP微带阴极宽度为8 mm,相邻两阴极间隔为2.8 mm,由幅值为-1.9 kV和宽度为210 ps的门控脉冲进行驱动。采用光纤传光束法测量了相机的触发晃动。实验结果表明,相机的触发晃动约为94 ps,与高速示波器测得的90 ps基本一致。此外,测得相机的时间分辨率约为100 ps。
美国政府对光激射器工作现在仍给以强有力的促进,这一倾向,可望无限期地继续下去。美国政府的大部份投资似乎都化在发展光激射器成品上。基本研究虽仍得到军事与航空部门的有力支持,但其重点似乎放在满足特殊要求的研究项目上。
美国国际商业机器公司的研究人员,一九七四年十二月十一日在华盛顿召开的国际电子器件会议上建议把激光器作为集成电路制作中的新工具。S. E. Schuster描述了在加工成的集成电路片上形成电连接的方法,并建议用于有缺陷的片的修理和通用片(诸如可编码逻辑列阵)的布线。
An experimental investigation of two-color polarization spectroscopy (TCPS) is presented based on the cesium 6S1/2 – 6P3/2 – 8S1/2 (852.3 nm 794.6 nm) ladder-type system in a room-temperature vapor cell. The dependency o
Er3 -doped phosphor-tellurite glass for broadband short-length Er3 -doped fiber amplifier (EDFA) is fabricated and characterized. The differential value (\DeltaT] of onset crystalline temperature (Tx) and glass transition temperature (Tg) is 206 oC. The
Refractive index (RI) sensing helps to identify biomolecules and chemicals in the mid-infrared range for drug discovery, bioengineering, and environmental monitoring. In this paper, we numerically demonstrate an electrically tunable RI sensor with ultrahi
In this experiment, we used 7-kW continuous wave (CW) CO_(2) low order mode laser and YAG impulse laser to deeply weld high-speed steel (W18Cr4V) and spring steel (65Mn). To welded joint, we analyzed its microstructure, micro hardness and fracture appeara
偏振光学去雾技术具有细节恢复好、颜色还原度高的优点。为了进一步提高偏振光学去雾技术的去雾能力,提出了一种新型偏振光学去雾技术,该技术利用离散余弦变换构建图像金字塔,再构建图像拉普拉斯金字塔,利用传统偏振光学去雾技术对图像拉普拉斯金字塔的每一级进行去雾处理,使用去雾后的拉普拉斯金字塔重建得到去雾后图像。实验结果表明,与传统偏振光学去雾技术相比,该技术可以得到相当或更好的去雾效果,表现出良好的图像去雾