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Replacement Laser for Holographic Fabrication of Photonic Crystals

用于光子晶体全息制造的替代激光器

基本信息

批准号：
EP/D051193/1
负责人：
Andrew Turberfield
金额：
$ 7.64万
依托单位：
University of Oxford
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2006
资助国家：
英国
起止时间：
2006 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FD051193%2F1
关键词：
Replacement Laser Holographic Fabrication Photonic

项目摘要

This grant proposal is intended to enable us to buy a replacement for a laser system. The laser has been troublesome in the past and is getting worse - it has been unusable for two months, and in that time the manufacturer has not been able to suggest how it might be returned to use. The laser is essential to our research - without a replacement we cannot continue with a project already funded by EPSRC which is described below.Photonic crystals are optical materials with regular, repeated, wavelength-scale microstructure. Photonic crystals are 'optical semiconductors' whose properties make them uniquely suitable for the fabrication of photonic integrated circuits. Their characteristic property is a 'photonic band gap' - a forbidden frequency range within which the structure acts as an optical insulator. 'Doping' with structural defects introduces localized electromagnetic modes which may be engineered to create the components of integrated optical devices, such as waveguides and microcavities. The high level of optical isolation that may be achieved within a photonic crystal means that photonic crystal-based integrated optical circuits promise to approach the density of integration of electronic devices, a development which will revolutionize the handling of telecommunications signals. In a collaboration between the Physics and Chemistry Departments at Oxford University we have developed a completely new way to make photonic crystals. We use a three-dimensional holographic laser interference pattern to create the necessary sub-wavelength microstructure in a thick film of photoresist. We then use a purpose-built confocal microscope to modify the structure to create waveguide etc. structures within it. This technique is inherently cheap and quick / it gives uniquely flexible access to a wide range of 3D photonic crystal phenomena and could be readily scaled up to commercial manufacture. In this proposal we aim to create 3D photonic crystals which are suitable for use in the range of wavelengths used in optical fibre telecommunications. We also aim to create engineered structural defects within 3D photonic crystals and to investigate the relationship between the structure of the defects and the optical properties of the 'doped' crystal as an important step towards three-dimensional integration of micrometer-scale optical devices.

这项拨款建议旨在使我们能够购买激光系统的替代品。激光器在过去一直很麻烦，而且越来越糟糕-它已经两个月无法使用了，在这段时间里，制造商还没有能够建议如何可能返回使用。激光器对我们的研究至关重要-如果没有替代品，我们无法继续进行EPSRC已经资助的项目，如下所述。光子晶体是具有规则，重复，波长尺度微结构的光学材料。光子晶体是一种“光学半导体”，其特性使其特别适合于制造光子集成电路。它们的特性是“光子带隙”--一个禁止的频率范围，在这个范围内，这种结构充当光学绝缘体。具有结构缺陷的“掺杂”引入了局部电磁模式，其可以被工程化以创建集成光学器件的组件，诸如波导和微腔。在光子晶体内可以实现的高水平的光学隔离意味着基于光子晶体的集成光学电路有望接近电子器件的集成密度，这一发展将彻底改变电信信号的处理。在牛津大学物理系和化学系的合作中，我们开发了一种制造光子晶体的全新方法。我们使用三维全息激光干涉图案在厚的光刻胶膜中创建必要的亚波长微结构。然后，我们使用一个专用的共聚焦显微镜修改的结构，以创建波导等。结构内it. This技术是固有的便宜和快速/它提供了独特的灵活访问到广泛的三维光子晶体现象，并可以很容易地扩大到商业制造。在这项提案中，我们的目标是创建3D光子晶体，适用于光纤电信中使用的波长范围。我们的目标还包括在3D光子晶体中创建工程结构缺陷，并研究缺陷结构与“掺杂”晶体的光学特性之间的关系，这是实现微米级光学器件三维集成的重要一步。