Chip-scale beam shaping and steering with metasurface-integrated silicon photonics
發布日期： 2025-12-03 公告單位： 物理學系
Chip-scale beam shaping and steering with metasurface-integrated silicon photonics
Prof. You-Chia Chang (張祐嘉)
Department of Photonics, National Yang Ming Chiao Tung University
Date: 2025/12/09 (Tue)
Venue: S4-625
Time: 14:00
Abstract :
Silicon photonics has enabled chip-scale devices capable of delivering free-space beams for the detection and manipulation of external objects. Key applications include LiDAR, free-space optical communication (FSO), and trapped-ion quantum computing. In the first part of this talk, I will present beam shaping using metasurfaces monolithically integrated with silicon photonic integrated circuits. We experimentally demonstrate diffraction-limited beam focusing and holographic image projection above the silicon photonic chip. Our demonstrations span both the telecommunication wavelength range using the Si platform and the visible wavelength range using the SiN platform. In the second part, I will discuss a resolution-enhanced silicon photonic beam steerer. We increase the number of resolvable points by combining coarse steering with a metalens focal plane array and fine-tuning with thermal prisms. We experimentally demonstrate a 2D beam steerer with enhanced resolution, achieving 48 resolvable points using 16 waveguide channels and a field of view of 67°.
Prof. You-Chia Chang (張祐嘉)
Department of Photonics, National Yang Ming Chiao Tung University
Date: 2025/12/09 (Tue)
Venue: S4-625
Time: 14:00
Abstract :
Silicon photonics has enabled chip-scale devices capable of delivering free-space beams for the detection and manipulation of external objects. Key applications include LiDAR, free-space optical communication (FSO), and trapped-ion quantum computing. In the first part of this talk, I will present beam shaping using metasurfaces monolithically integrated with silicon photonic integrated circuits. We experimentally demonstrate diffraction-limited beam focusing and holographic image projection above the silicon photonic chip. Our demonstrations span both the telecommunication wavelength range using the Si platform and the visible wavelength range using the SiN platform. In the second part, I will discuss a resolution-enhanced silicon photonic beam steerer. We increase the number of resolvable points by combining coarse steering with a metalens focal plane array and fine-tuning with thermal prisms. We experimentally demonstrate a 2D beam steerer with enhanced resolution, achieving 48 resolvable points using 16 waveguide channels and a field of view of 67°.
更新日期: 2025-12-03
公告類別: 演講
瀏覽人次: 50