Mid-Infrared photonic sources and devices

中红外光子源和器件

• 批准号: RGPIN-2015-06554
• 负责人: Vallée, Réal
• 金额: $ 3.06万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=688506
• 关键词: Mid; Infrared; photonic; sources; devices

The middle infrared spectral region (mid-IR) which is comprising the strong vibrational transitions of most common molecules (methane, ozone, water, CO2, etc), has emerged recently as a spectral region of utmost scientific and technological importance. Not surprisingly though, mid-IR laser sources as well as corresponding transmitting and processing devices (e.g. waveguides, sensors, etc.) have proven how crucial they are for several applications, namely in spectroscopy, material processing and bio-molecular sensing. Numerous environmental (remote vapour trace detection), security (missile countermeasures) and communication (covert communication systems) applications could also benefit from mid-IR sources that cover the two atmospheric transmission windows of 3-5 microns and 8-13 microns. Now, the development of mid-IR sources, components and devices is facing several practical and fundamental challenges that need to be addressed. The main objective of this proposal is therefore specifically to address those fundamental challenges pertaining to the development of both mid-IR fiber lasers and mid-IR integrated photonic components.****In order to meet this objective we will take advantage of the fact that photonics makes it now possible to modify material properties through nonlinear laser matter interaction. As a matter of fact, femtosecond pulses possesses the ability to perfectly control the energy deposition rate on a precise area of a transparent material and therefore to alter their physical and optical properties very precisely. This is crucial to a variety of new processes such as the inscription of waveguiding or reflecting structures in glass; the welding transparent dielectric materials together or with other materials such as crystals (sapphire, diamond, YAG, ZnSe, etc.) or metals; the precise cutting or piercing of dielectric materials. Now, it clearly appears that the whole potential of the femtosecond inscription of such photoinduced 3D photonic components have not yet been explored for materials and devices operating in the mid-IR spectral region. This is along this line that our reseach activity will be oriented and although the objective of our discovery grant is primarily to address the fundamental aspects underlying such development, its outcome are likely to have a significant socio-economic impact, namely in biomedicine, telecommunications and defense&security.***

中红外光谱区（mid-IR）包括大多数常见分子（甲烷、臭氧、水、CO2等）的强振动跃迁，最近已成为具有最大科学和技术重要性的光谱区。然而，不令人惊讶的是，中红外激光源以及相应的发射和处理设备（例如，波导、传感器等）可以用于发射激光。已经证明了它们在光谱学、材料加工和生物分子传感等多个应用中的重要性。许多环境（远程蒸汽痕迹探测）、安全（导弹对抗）和通信（秘密通信系统）应用也可以受益于覆盖3-5微米和8-13微米两个大气透射窗口的中红外源。目前，中红外光源、元件和器件的发展面临着一些需要解决的实际和根本性的挑战。因此，该提案的主要目标是专门解决与中红外光纤激光器和中红外集成光子器件开发相关的基本挑战。为了实现这一目标，我们将利用光子学使得现在可以通过非线性激光物质相互作用来修改材料特性的事实。事实上，飞秒脉冲具有完美控制透明材料精确区域上的能量沉积速率的能力，因此能够非常精确地改变其物理和光学性质。这对各种新工艺至关重要，例如在玻璃中刻波导或反射结构;将透明电介质材料焊接在一起或与其他材料如晶体（蓝宝石，金刚石，YAG，ZnSe等）焊接在一起。或金属;电介质材料的精确切割或刺穿。 现在，很明显，这种光致3D光子组件的飞秒铭文的整个潜力尚未被探索用于在中红外光谱区域中操作的材料和设备。这就是我们的研究活动将面向的沿着这条路线，虽然我们的发现补助金的目标主要是解决这种发展的基本方面，但其结果可能会产生重大的社会经济影响，即在生物医学，电信和国防与安全领域。