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Metal Coated Nanostructures for Laser and Light Localization Applications.

机译：用于激光和光定位应用的金属涂层纳米结构。

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摘要

Nanolasers, as an important on-chip source in photonic integrated circuits, was investigated by inserting dielectric shield layers and surrounded with "plug" regions. Both dissipation losses and radiation losses were largely reduced, implying a very low threshold gain. Model optimization can be made for optically pumped and electrically pumped lasers, showing a low enough threshold gain that allows lasing action at room temperature. The appealing property of more directional radiation and enhanced coupling efficiency can be acquired by laterally shifting the gain core.;With the background of Heat Assisted Magnetic Recording (HAMR), the proposed laser was directly attached to the recording head, aiming at generating a small enough hot spot near the main pole. Models with different current path for electrical pumping were discussed and compared. Together with a plasmonic slit near-field transducer, the power can be delivered and confined to a reasonable small area over the recording medium, implying an effective HAMR system. To further achieve field localization, we propose a coupling system that can provide a small hot spot for HAMR. A Channel Plasmonic-Polariton (CPP) V-groove waveguide was coupled to a dielectric waveguide, which transmits power from an outside excitations. Field localization can be obtained after propagating in the V-groove waveguide, and strengthened by ending at certain distance and gradually tapering the end. The FWHM size of the generated hot spot can be as small as 24nmx48nm, showing a more effective HAMR system on both hot spot size and location.
机译：纳米激光作为光子集成电路中的重要片上光源，已通过插入介电屏蔽层并被“插头”区域包围而得到了研究。损耗损耗和辐射损耗都大大降低了，这意味着阈值增益非常低。可以对光泵浦和电泵浦激光器进行模型优化，显示出足够低的阈值增益，允许在室温下产生激光作用。可以通过横向移动增益磁芯来获得更具方向性的辐射和增强的耦合效率的吸引人的特性。在热辅助磁记录（HAMR）的背景下，将拟议的激光器直接安装在记录头上，旨在产生较小的体积。主极附近有足够的热点。讨论并比较了具有不同电流路径的电泵模型。与等离子狭缝近场换能器一起，可将功率传递并限制在记录介质上的合理小区域内，这意味着有效的HAMR系统。为了进一步实现现场定位，我们提出了一种耦合系统，可以为HAMR提供一个小的热点。通道等离振子（CPP）V形槽波导耦合到介质波导，该介质波导从外部激励中传输功率。在V形槽波导中传播后即可获得场定位，并通过在一定距离处终止并逐渐逐渐减小端部来增强场定位。生成的热点的FWHM大小可以小至24nmx48nm，这在热点大小和位置上都显示出更有效的HAMR系统。

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  • 作者

    Ding, Qian.;

  • 作者单位

    University of California, San Diego.;

  • 授予单位 University of California, San Diego.;
  • 学科 Engineering Electronics and Electrical.;Physics Optics.;Physics Electricity and Magnetism.
  • 学位 M.S.
  • 年度 2012
  • 页码 87 p.
  • 总页数 87
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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