@inproceedings{3b3422d1cb814fac8ec6b00fdb10cb7e,
title = "Depth sensing with metasurface and PCSEL integration",
abstract = "We present a novel depth sensing system applying metasurface holograms and photonic crystal surface-emitting lasers (PCSELs). Our lens-free, single-shot system projects 9,500 infrared dots in a 0th order of holographic image from a compact ~3002 μm2 sample area, offering a wide 56.7° field-of-view (FOV) with low power consumption. Our metasurface area is 55 times smaller than that of diffractive optical elements (DOEs) in commercial dot projectors. And our PCSEL has up to 10 times less power consumption than that of vertical-cavity surface-emitting laser (VCSEL) array in commercial dot projectors. The GaAs-based metasurface hologram and simple optical architecture make it lighter and more energy-efficient, suitable for wearable devices. This technology overcomes limitations of bulky dot projectors, paving the way for integration into compact wearable devices.",
keywords = "depth sensing, hologram, metasurfaces, photonic crystal surface emitting laser, structured light",
author = "Hsu, {Wen Cheng} and Chang, {Chia Hsun} and Hong, {Yu Heng} and Kuo, {Hao Chung} and Huang, {Yao Wei}",
note = "Publisher Copyright: {\textcopyright} 2023 SPIE.; Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXI 2023 ; Conference date: 20-08-2023 Through 24-08-2023",
year = "2023",
doi = "10.1117/12.2676118",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Takuo Tanaka and Yu-Jung Lu",
booktitle = "Plasmonics",
address = "United States",
}