有机Janus谐振腔的可控构筑及其用于宽频可调微纳激光器的研究

Broadband tunable micro/nanolasers are key components of dense wavelength division multiplexing communication systems, which are crucial to the development of photonic integrated circuits. In this project, we will propose a general strategy to design and construct the broadband tunable micro/nanolasers from the organic Janus resonators, which have the biphasic geometry with different chemical properties. Firstly, we will prepare different shaped Janus resonators via the phase separation or microfluidics techniques. Then, we will investigate the selective encapsulation behavior of the biphasic Janus resonators and try to develop a general route for the spatially selective doping of the organic laser dyes. The photonic properties of the organic Janus resonators will be well characterized and the corresponding “structure-function” relationship will be revealed. On this basis, we will optimize the cavity parameters and systematically alter the encapsulated dyes to realize the broadband dual-color lasers from the Janus resonators. Finally, smart responsive materials (such as thermal responsive molecules, optical-responsive molecules and so on) will be used to modulate the dual-color Janus lasers. The actualization of this project will expand the application areas of the organic Janus materials and provide an ideal platform for the design and fabrication of integrated multifunctional optical devices.

宽频可调微纳激光器是波分复用技术系统中的关键光子学器件，对集成光子学回路的发展至关重要。本项目拟采用有机Janus材料制备光学谐振腔，借助其独特的空间分区特性实现宽频可调微纳激光器的可控构筑。首先，通过相分离和微流控等途径，制备不同类型的有机Janus腔结构；探索激光染料等光功能分子在有机Janus谐振腔中的选区复合规律，提出普适的染料选区负载方法；深入研究不同有机Janus腔结构中光子的传输及谐振特性，建立相应的“结构-性能”关系；在此基础上，优化谐振腔的结构，筛选发光不同的染料分子对，实现宽频Janus激光的可控构筑；引入智能响应性分子，探索Janus激光的分区调控手段，实现Janus激光的动态调控，为后续有机Janus器件的设计和功能扩展提供有益的指导。本项目的实施有望拓展有机Janus材料的应用领域，丰富纳米光子学的材料体系，为多功能光子学器件的构建提供新思路。

多色微纳相干光源在生物传感、激光显示、多通道光通信等领域有重要的应用前景。但多种增益介质间的吸收损耗给谐振腔的设计带来了巨大的挑战。本项目开发了一种乳液分相自组装的方法，成功制备出了两亲的Janus微球回音壁模式谐振腔；利用热力学参数揭示激光染料在两亲Janus谐振腔中的选择性复合规律，提出普适的染料选区负载方法，成功在空间上实现不同增益材料的分离，有效避免不同增益材料间的吸收损耗；采用微区光谱测试系统和数值模拟等手段研究了光子在Janus谐振腔中的传输及谐振特性，各向异性的光学增益使Janus谐振腔成为天然的“并联”腔；通过调控激发方式和筛选发光不同的染料分子对，成功在全光谱范围内实现双色激光的任意组合；此外，通过智能材料的引入，Janus激光的发射波长可以进行动态调控，为光信号的编码提供可能。本项目的研究成果可以有效拓展Janus材料的应用领域，同时也为新型多功能光子学器件的构筑奠定基础。