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

该提案旨在研究激光和电介质的相互作用，特别是玻璃，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，该提案寻求几个答案，关于光纤中超过一阶的受激布里因散射的噪声特性，光纤中瑞利散射在紫外线辐射下的增强，我们是第一个报道的，“完美”米长的光纤Bragg光栅的实现与超窄带宽，以及通过操纵相位和振幅来“裁剪”光源光学特性的可能性。而窄线宽激光器，表现出优异的低成本激光器性能。结合宽带谐波产生和内部构建的周期性极化非线性晶体，将使超窄波长转换到新的区域变得容易，成本远低于目前可能的水平。随机激光是一个非常有趣的领域，不仅从科学的角度来看，而且从严肃的应用，如混沌通信和与生物组织散射效应的关联。将光子学集成到手机玻璃中的下一个前沿领域是一个需要充分利用的挑战。“纸带光子学”的相关领域是一个刚刚开始的领域，它应该在临床和实验室环境中产生有趣的应用。利用带上硫化物波导的非线性，用fs激光器写入，为将互连与功能结合起来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。我们还试图找到空心光纤中冷原子引导的极限，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界限。SPR传感器多路复用的许多方面都需要研究：例如，如何远程影响引导模式与SPR的耦合。***光纤作为光的管道，一直是一种无源器件；我们的目标是给它涂上专门的涂层，比如碳纳米管和定向聚合物，以增加光学传感的新功能，以及没有缓冲层的特殊涂层纤维，迄今为止在商业世界中是不可用的。**

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. **