Research Overview
Our research group focuses on addressing the theoretical and technological bottlenecks in generating, manipulating and understanding light at the micro/nanoscale. By grasping cutting-edge physical concepts and utilizing advanced materials in combination with advanced processing techniques, we aim to develop highly efficient, multifunctional micro/nanoscale electrooptical meta-devices to facilitate further development of optical displays, energy harvesting, and optical communications.
All-dielectric nanoantennas:
This project explores all-dielectric nanoantennas – nanostructures that bridge near-field confinement and far-field radiation to control light at the nanoscale. Moving beyond plasmonic counterparts, they enable low-loss light manipulation via anomalous scattering effects governed by Mie resonances. Our work spans from single-particle scattering dynamics to arrays (tailoring transmission/reflection/absorption), advancing from static designs to actively tunable devices and unlocking applications in ultra-compact photonics, sensing, and quantum light management where precise subwavelength light control is critical.
On-chip nano/micro lasers:
This project pioneers on-chip nano/micro lasers, revolutionizing integrated photonics by transitioning from passive light manipulation to active light generation + manipulation on a single chip. We develop ultra-compact coherent sources to overcome efficiency and scaling limits by exploring new physics (e.g., non-Hermitian optics, topological lasing) and advanced materials (quantum dots, 2D materials, perovskites). These functional light sources enable monolithic integration with photonic circuits, critical for next-generation optoelectronics, ultra-fast computing, and quantum technologies where size, power, and coherence matter.
Metafibers:
This project pioneers 'Lab on Fiber' platform to overcome traditional optical fibers' limitations in light manipulation and signal distortion. By integrating dielectric metasurfaces onto fiber end-faces via novel in-situ fabrication, we enable light control immune to fiber perturbations. These multifunctional metafibers will revolutionize applications from high-capacity communication (multiplexing) and quantum networks to ultra-precise sensing and biomedical devices, where stable, compact light manipulation is critical.
Electrooptical metadevices:
This project explores electrooptical metadevices by integrating dielectric metasurfaces with active materials to enable robust multidimensional photodetection. We aim to resolve critical tradeoffs between multifunctionality, miniaturization, and efficiency and achieve simultaneous angle-polarization-wavelength sensing in ultracompact platforms. The resulting metadevices will transform autonomous sensing systems—enabling real-time environmental mapping for self-driving vehicles, molecular fingerprinting for medical diagnostics, and lightweight instrumentation for space exploration.