Topological nanophotonics for photoluminescence control

Nanophotonics

article

Aditya Tripathi¹  Sergey Kruk¹  Yunfei Shang⁴  Jiajia Zhou⁴  Ivan Kravchenko⁵  Dayong Jin⁴  Yuri Kivshar¹ 

[1] Nonlinear Physics Center, Research School of Physics, Australian National University;Department of Physics, Indian Institute of Technology Delhi;Department of Physics, University of Paderborn;Institute for Biomedical Materials and Devices (IBMD), University of Technology Sydney;Center for Nanophase Materials Sciences, Oak Ridge National Laboratory

关键词: edge states;    nanophotonics;    polarization control;    rare-earth-doped nanocrystals;    topological photonics;   

DOI  :  10.1515/nanoph-2020-0374

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

Objectives Rare-earth-doped nanocrystals are emerging light sources that can produce tunable emissions in colours and lifetimes, which has been typically achieved in chemistry and material science. However, one important optical challenge – polarization of photoluminescence – remains largely out of control by chemistry methods. Control over photoluminescence polarization can be gained via coupling of emitters to resonant nanostructures such as optical antennas and metasurfaces. However, the resulting polarization is typically sensitive to position disorder of emitters, which is difficult to mitigate. Methods Recently, new classes of disorder-immune optical systems have been explored within the framework of topological photonics. Here we explore disorder-robust topological arrays of Mie-resonant nanoparticles for polarization control of photoluminescence of nanocrystals. Results We demonstrate polarized emission from rare-earth-doped nanocrystals governed by photonic topological edge states supported by zigzag arrays of dielectric resonators. We verify the topological origin of polarized photoluminescence by comparing emission from nanoparticles coupled to topologically trivial and nontrivial arrays of nanoresonators. Conclusions We expect that our results may open a new direction in the study of topology-enable emission properties of topological edge states in many photonic systems.

【 授权许可】

CC BY