High- Q nanophotonics: sculpting wavefronts with slow light

Nanophotonics

article

David Barton¹  Jack Hu¹  Jefferson Dixon¹  Elissa Klopfer¹  Sahil Dagli¹  Mark Lawrence¹  Jennifer Dionne¹ 

[1] Department of Materials Science and Engineering, Stanford University;Department of Mechanical Engineering, Stanford University;Department of Radiology, Stanford University

关键词: high-Q;    slow light;    wavefront manipulation;   

DOI  :  10.1515/nanoph-2020-0510

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

Densely interconnected, nonlinear, and reconfigurable optical networks represent a route to high-performance optical computing, communications, and sensing technologies. Dielectric nanoantennas are promising building blocks for such architectures since they can precisely control optical diffraction. However, they are traditionally limited in their nonlinear and reconfigurable responses owing to their relatively low-quality factor ( Q -factor). Here, we highlight new and emerging design strategies to increase the Q -factor while maintaining control of optical diffraction, enabling unprecedented spatial and temporal control of light. We describe how multipolar modes and bound states in the continuum increase Q and show how these high- Q nanoantennas can be cascaded to create almost limitless resonant optical transfer functions. With high- Q nanoantennas, new paradigms in reconfigurable wavefront-shaping, low-noise, multiplexed biosensors and quantum transduction are possible.

【 授权许可】

CC BY