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Sub-Wavelength Resonant Structures at Microwave and Optical Frequencies.

机译:微波和光学频率下的亚波长谐振结构。

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摘要

Sub-wavelength scale resonant structures have been at the forefront of physics and engineering in the past decade. They offer a path for creation of new materials and great advancements in the field of photonics. This dissertation deals with design, fabrication and characterization of sub-wavelength resonant structures. In the first part, we investigate the application of passive sub-wavelength resonators in meta-materials---materials that have electromagnetic properties otherwise unattainable in nature. We develop a technique for characterization of negative index meta-materials by free-space measurement of the phase change in the meta-material. We also discuss the application of sub-wavelength resonators to highly efficient antenna design.;In the second part of the dissertation we focus on active sub-wavelength resonant structures, specifically nanolasers. We present a first truly sub-wavelength nanolaser operating at the room temperature and later investigate cryogenic operation of this laser design. We also offer a new, highly compatible, fabrication approach that could enable the integration of nanolasers in various silicon photonic devices. Lastly, we show a coaxial nanolaser that offers some new and truly unique features. For one it is the first sub-wavelength laser that operates at continuous wave at room temperature. More importantly, it exhibits single mode, thresholdless lasing at cryogenic temperatures. We discuss the significance and the implications of these results.
机译:在过去的十年中,亚波长尺度的共振结构一直处于物理学和工程学的前沿。它们为创建新材料和光子学领域的巨大进步提供了一条途径。本文主要研究亚波长谐振结构的设计,制作和表征。在第一部分中,我们研究了无源亚波长谐振器在超材料中的应用,超材料是具有电磁特性的材料,而这些材料在自然界是无法实现的。我们开发了一种通过对超材料的相变进行自由空间测量来表征负折射率超材料的技术。我们还讨论了亚波长谐振器在高效天线设计中的应用。在论文的第二部分,我们重点研究了有源亚波长谐振结构,特别是纳米激光。我们提出了第一个在室温下运行的真正的亚波长纳米激光,随后研究了这种激光器设计的低温运行。我们还提供了一种新的,高度兼容的制造方法,该方法可以将纳米激光集成到各种硅光子器件中。最后,我们展示了同轴纳米激光,它提供了一些新的和真正独特的功能。其中一个是在室温下连续波工作的第一台亚波长激光器。更重要的是,它在低温下显示出单模无阈值激射。我们讨论了这些结果的意义和含义。

著录项

  • 作者

    Simic, Aleksandar.;

  • 作者单位

    University of California, San Diego.;

  • 授予单位 University of California, San Diego.;
  • 学科 Physics Optics.
  • 学位 Ph.D.
  • 年度 2011
  • 页码 150 p.
  • 总页数 150
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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