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Studies on metallic three-dimensional photonic crystals.

機(jī)譯：金屬三維光子晶體的研究。

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摘要

In this dissertation, photonic crystals were studied theoretically and great attention was paid to the metallic three-dimensional (3-D) photonic crystals. Woodpile structures and spiral structures are especially studied. First, the infrared propagation character of metallic woodpile photonic crystals made of gold in the direction was studied. The bandgap in metallic woodpile was found to be interrupted by a new propagating mode far beyond the waveguide cutoff. Studies of surface plasmons within the structure showed that 3-D metallic photonic crystals can expand the propagating mode far beyond waveguide cutoff.;Second, based on this propagating mode, this dissertation details the design and simulation of an inconspicuous photonic paint that can be applied onto an object for anticounterfeit and tag, track, and locate (TTL) applications. The paint consists of three-dimensional metallic tilted woodpile photonic crystals embedded into a visible and infra-red transparent polymer film, which can be applied to almost any surface. The tilted woodpile photonic crystals are designed with a specific pass band detectable at nearly all incident angles of light. When painted onto a surface, these crystals provide a unique reflective infra-red optical signature that can be easily observed and recorded to verify the location or contents of a package.;Finally, the optical properties of a gold spiral photonic crystal (PC) were studied theoretically and a full three-dimensional (3-D) band gap at near infrared wavelengths was found. This band gap, ranging from 1.2µm to 1.8µm in wavelength, covers all the second and third telecom windows used in optical fiber communications. Chiral and other optical properties were also discussed. There is a very high absorption at the band gap edge due to the retarded speed of light and an abnormal high transmission outside the band gap contributed by surface plasmon polaritons. Both right circular polarized (RCP) and left circular polarized (LCP) light are studied, and great diversities were found in certain regions of the spectrum. These optical properties maintain within large incident angles. All these studies will give a deeper insight to the complex metallic 3-D photonic crystals.
機(jī)譯：本文對(duì)光子晶體進(jìn)行了理論研究，對(duì)金屬三維（3-D）光子晶體給予了極大的關(guān)注。特別研究了木樁結(jié)構(gòu)和螺旋結(jié)構(gòu)。首先，研究了由金制成的金屬木樁光子晶體在方向上的紅外傳播特性。發(fā)現(xiàn)金屬木樁中的帶隙被遠(yuǎn)遠(yuǎn)超出波導(dǎo)截止的新傳播模式所中斷。結(jié)構(gòu)內(nèi)表面等離激元的研究表明，3-D金屬光子晶體可以擴(kuò)展傳播模式，遠(yuǎn)遠(yuǎn)超出波導(dǎo)截止。第二，本文基于這種傳播模式，詳細(xì)介紹了可以應(yīng)用的不起眼的光子涂料的設(shè)計(jì)和仿真。到用于防偽和標(biāo)記，跟蹤和定位（TTL）應(yīng)用程序的對(duì)象上。該涂料由嵌入可見(jiàn)光和紅外透明聚合物膜中的三維金屬傾斜柴堆光子晶體組成，該膜可應(yīng)用于幾乎任何表面。傾斜的木樁光子晶體的設(shè)計(jì)具有特定的通帶，可在幾乎所有入射角處檢測(cè)到該通帶。當(dāng)涂在表面上時(shí)，這些晶體提供了獨(dú)特的反射紅外光學(xué)特征，可以很容易觀察和記錄以驗(yàn)證包裝的位置或內(nèi)容。最后，金螺旋光子晶體（PC）的光學(xué)特性是從理論上進(jìn)行了研究，發(fā)現(xiàn)了在近紅外波長(zhǎng)下的完整三維（3-D）帶隙。該帶隙的波長(zhǎng)范圍為1.2μm至1.8μm，覆蓋了光纖通信中使用的所有第二和第三電信窗口。還討論了手性和其他光學(xué)性質(zhì)。由于光的延遲速度和表面等離激元極化子引起的帶隙外的異常高透射，帶隙邊緣處的吸收非常高。研究了右圓偏振（RCP）和左圓偏振（LCP）光，并且在光譜的某些區(qū)域發(fā)現(xiàn)了很大的多樣性。這些光學(xué)性質(zhì)保持在大入射角內(nèi)。所有這些研究將為復(fù)雜的金屬3-D光子晶體提供更深刻的見(jiàn)解。

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  • 作者

    Sun, Po.;

  • 作者單位

    The University of Alabama in Huntsville.;

  • 授予單位 The University of Alabama in Huntsville.;
  • 學(xué)科 Nanoscience.;Engineering Materials Science.;Physics Optics.
  • 學(xué)位 Ph.D.
  • 年度 2012
  • 頁(yè)碼 115 p.
  • 總頁(yè)數(shù) 115
  • 原文格式 PDF
  • 正文語(yǔ)種 eng
  • 中圖分類 TS97-4;
  • 關(guān)鍵詞

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