LIMONCELLO: Laser wrItten millimeter long nanocrystalline lanthanide waveguide lasers with rare earth doping

光子学科学和技术还需要不断发展，以满足基础科学、激光物质相互作用、医学和通信等广泛应用的不断需求。RE3+掺杂的纳米晶体材料最近在坚固的可加工玻璃中显示出很大的希望。该提案的目标是蒙特利尔理工大学（PM）与拉瓦尔大学合作的掺有RE3+离子的氟化氧玻璃，用于高效激光辅助冷却，高功率激光/放大器系统和其他光学集成电路应用。我们对材料的更好理解和纯化导致了用纳米晶稀土掺杂制造坚固的氟氧玻璃，最近我们已经证明了当用激光泵浦时，这些玻璃中的净加热接近零。这项提议将使我们能够利用由pi首创的最低损耗波导的飞秒激光写入技术，以及在拉瓦尔大学的低声子能量玻璃中结合的纳米晶体镧系元素，用于实际应用所需的紧凑且环保的激光源，通常需要振动不敏感的光学腔，用于各种便携式高功率设备。因此，该项目的最终目标是允许使用高纯度、低成本、可模塑的掺杂RE3+的纳米晶体（NC）掺杂镧系玻璃，用于高效激光泵浦低温冷却器和通过飞秒激光直接写入（FLDW）技术制造低损耗波导，用于开发具有成本效益的微型集成电路与Bragg光栅相结合。

Photonics science and technology has yet to evolve to meet the incessant demands in a wide range of applications such as in basic sciences, laser-matter interaction, medicine, and communications. RE3+-doped nanocrystalline materials have recently shown great promise for incorporation into robust processable glasses. This proposal targets oxyfluoride glasses doped with RE3+ ions at Polytechnique Montreal (PM) in partnership with Laval University, for high efficiency laser assisted cooling, high power laser/amplifier systems and other optical integrated circuit applications. Our better understanding and purification of materials has led to the fabrication of robust oxy-fluoride glasses with nanocrystalline rare earth doping, and recently we have demonnstrated near zero net heating in these glasses when pumped with lasers. This proposal will allow us to exploit the technology of femtosecond laser writing of the lowest loss waveguides pioneered by the PIs, and the nano-crystalline lanthanides incorporated in low phonon energy glass at Laval University for compact and environmentally robust laser sources that are required for real-life applications, often necessitating vibration insensitive optical cavities, for a variety of portable, high power appliances. Hence, the ultimate aims of the proposed project is to allow the use of the highly pure, low-cost, mouldable nano crystalline (NC's)-doped lanthanide glasses with RE3+-doping for high efficiency laser pumped cryo-coolers and the fabrication of low loss waveguides by femtosecond laser direct writing (FLDW) technique, for the development of cost-effective and miniature integrated circuits in combination with Bragg gratings.