Here, we show a design and fabrication that consists of GaN-based integrated-resonant unit elements to achieve an achromatic metalens operating in the entire visible region in transmission mode. The focal length of our metalenses remains unchanged as the incident wavelength is varied from 400 to ...
P. Tsai, "A broadband achromatic metalens in the visible," Nat. Nanotechnol. 13(3), 227-232 (2018).Wang, S. et al. A broadband achromatic metalens in the visible. Nat. Nanotech. 13, 227- 232 (2018).Wang, S. et al. A broadband achromatic metalens in the visible. Nat. ...
Metalens, composed of arrays of nano-posts, is an ultrathin planar optical element used for constructing compact optical systems which can achieve high-per... L Zhang,C Wang,Y Wei,... - 《Nanomaterials》 被引量: 0发表: 2023年 Broadband achromatic metalens in the visible spectrum In this ...
as well as light confinement in either a resonant or guided man-ner. Previous works have addressed this challenge by using multiple coupled resonances to tailor phase profiles at several discrete frequen-cies 16,17
broadband achromatic metalenses covering the entire visible spectrum. Here, we show that by judicious design of nanofins on a surface, it is possible to simultaneously control the phase, group delay and group delay dispersion of light, thereby achieving a transmissive achromatic metalens with large ...
"This new design gives us a lot of freedom to tune the geometrical parameters of the metalens, which allows us to better achieve achromatic focusing across the entire visible range," said Chen. "Next we aim to maximize efficiency and make much larger-size achromatic metalenses to bring them ...
the entire visible spectrum from wavelength 460 nm to 700 nm, while maintaining diffraction-limited performance. The metalens is comprised of just a single layer of TiO2 nanofins and has a numerical aperture of 0.2 with a diameter of 26.4 um. The generality of our polarization-insensitive design...
High-efficiency broadband achromatic metalens in the visible Moreover, we design a multi-wavelength off-axis bi-focal metalens to demonstrate the flexible control of output light phase and dispersion achieved by ... L Hou,H Zhou,D Zhang,... 被引量: 0发表: 2024年 ...
The array of the first phase compensation structures are disposed to surround the array of the second phase compensation structures so as to define a single metalens. The first and second phase compensation structures are complementary to each other and substantially satisfy the Babinet's principle....
By combining recursive ray-tracing and simulated phase libraries, the hybrid achromatic metalens also shows its potential in achieving high focusing efficiency and broadband achromatism20. But the multi-photon process is not ready for shorter wavelength and the photoresist device faces the challenge ...