Laser Interaction with Materials for Applications in Optics and photonics: LIMAO

这项提议旨在研究激光和电介质的相互作用，特别是玻璃，这是人类已知的最有趣的材料之一。虽然它有几个不同的研究领域，但这种联系仍然是激光与材料的相互作用。 因此，该提议寻求几个答案，包括一阶以外光纤中受激布里渊散射的噪声特性，我们第一个报道的在紫外线辐射下光纤中瑞利散射的增强，具有超窄带宽的“完美”米长光纤布拉格光栅的实现，以及通过操纵相位和幅度来“定制”光源光学特性的可能性，以及窄线宽激光器，显示出作为低成本激光器的出色性能。将这一点与宽带谐波产生和内部构建的周期性极化非线性晶体相结合，将允许超窄波长转换到新的区域，而且成本比目前可能的低得多。随机激光不仅从科学的角度，而且从严肃的应用角度来看，都是一个非常令人好奇的领域，例如在混沌通信和与生物组织中的散射效应有关的应用中。将光子学集成到手机玻璃中的下一个前沿是一个需要充分利用的挑战。“磁带上的光子学”的相关领域才刚刚开始，应该会在临床和实验室环境中产生有趣的应用。利用用飞秒激光写入的磁带上硫化物波导的非线性，为将互连与功能相结合提供了令人兴奋的可能性。如何利用这项技术来增加功能还有待发现。我们还试图在空芯光纤中找到冷原子引导的极限，并通过在目前有限的高效冷却器中引入更多可管理的材料来推动激光冷却的边界。SPR传感器的多路复用需要研究：例如，如何远程实现与SPR的导模耦合。 光纤作为光的管道，一直是一种无源设备；我们的目标是在光纤上涂上碳纳米管和取向聚合物等特殊涂层，以增加光学传感的新功能，并在没有缓冲层的情况下对光纤进行特殊涂层，这在商业世界中是迄今无法获得的。

This proposal aims to investigate the interaction of lasers and dielectrics, especially glass, one of the most interesting materials known to man. While it has several different areas of investigation, the link nevertheless remains as laser-material interaction. Hence, the proposal seeks several answers, on the noise characteristics of stimulated Brillouin scattering in optical fibre beyond the first order, the enhancement in Rayleigh scatter in optical fibre with exposure to UV radiation which we were the first to report, the implementation of “perfect” meter long fibre Bragg grating with ultra-narrow bandwidths and the possibility of “tailoring” the optical characteristics of sources by manipulating phase and amplitude, and narrow linewidth lasers, exhibiting an outstanding performance for a low cost laser. Combining this with broadband harmonic generation with in-house built periodically poled nonlinear crystals will allow ultra-narrow wavelength transposition to new regions with ease at a far lower cost than has been possible so far. Random lasers is an area of intense curiosity not only from a scientific point of view but also from serious applications such as in chaotic communication and association with scattering effects in bio tissue. One of the next frontier in photonics integration into cell-phone glass is a challenge which needs to be fully exploited. The related area of “Photonics on a tape” is an area that has only just begun, and one which should yield interesting application in the clinical and laboratory environment. Exploiting the nonlinearity of chalcogenide waveguides on a tape, written with fs lasers offers exciting possibilities for combining interconnects with functionality. How this technology may be harnessed for added functionality is yet to be discovered. We also seek to find the limits of cold atom guidance in hollow-core optical fibres as well as push the boundaries of laser cooling by introducing more managable materials to the currently limited high efficiency coolers. Many aspects of multiplexing of SPR sensors have to be investigated: for example, how the guided mode coupling to the SPR may be effected remotely. Optical fiber being the conduit for light, has remained a passive device; we aim to coat it with specialist coatings such as carbon nanotubes and oriented polymers to add novel functionality for optical sensing and specially coated fibre without a buffer layer, so far unavailable in the commercial world.