Calculations of Photonic Band Structure

光子能带结构的计算

• 批准号: 9113953
• 负责人: Kok Leung
• 金额: --
• 依托单位: Polytechnic University of New York
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-04-15 至 1995-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9113953&HistoricalAwards=false
• 关键词: Calculations; Photonic; Band; Structure

There has been great progress recently in the creation of artificial three-dimensional dielectric structures which are to photon waves as semiconductor crystals are to electron waves. That is, these photonic crystals have a photonic bandgap, a band of frequencies in which electromagnetic waves are forbidden, irrespective of propagation direction in space. A face-centered-cubic photonic crystal has recently been introduced, fabricated, and studied experimentally and theoretically. The experimental findings for the photonic band structure and for the attenuation length within the band gap are in excellent agreement with our calculated results. Photonic bandgap materials inhibit the spontaneous absorption and emission of photons of the frequencies concerned and have many potential applications in device physics. Examples are zero- threshold semiconductor lasers, highly efficient heterojunction bipolar transistors and highly reliable light-emitted-diodes. Moreover, very compact high- Q resonators can be made with these materials for applications from millimeter to ultraviolet wavelengths by introducing defects into the structure. We will continue to search for photonic band gap materials with specific photonic band gap structures tailored to particular applications. We will also calculate the effects of these materials on a variety of optical, atomic and chemical processes.

最近，在人造三维介电结构的创建方面取得了巨大进展，其对于光子波的作用就像半导体晶体对于电子波的作用一样。也就是说，这些光子晶体具有光子带隙，即电磁波被禁止的频带，无论空间中的传播方向如何。最近引入、制造了面心立方光子晶体，并进行了实验和理论研究。光子能带结构和带隙内衰减长度的实验结果与我们的计算结果非常一致。光子带隙材料抑制相关频率光子的自发吸收和发射，在器件物理中具有许多潜在的应用。例如零阈值半导体激光器、高效异质结双极晶体管和高度可靠的发光二极管。此外，通过在结构中引入缺陷，可以使用这些材料制造非常紧凑的高 Q 谐振器，用于从毫米到紫外波长的应用。我们将继续寻找具有适合特定应用的特定光子带隙结构的光子带隙材料。我们还将计算这些材料对各种光学、原子和化学过程的影响。