Concentric circular focusing reflector realized using high index contrast gratings
Sign Up to like & getrecommendations! Published in 2017 at "Optics Communications"
DOI: 10.1016/j.optcom.2017.06.096
Abstract: Abstract A non-periodic concentric circular high index contrast grating (CC-HCG) focusing reflector on 500 nm silicon-on-insulator (SOI) platform is fabricated and experimentally demonstrated. The proposed mirror is realized with phase modulation of wave front in… read more here.
Keywords: reflector; concentric circular; focusing reflector; index contrast ... See more keywords
Mie Resonances Enabled Subtractive Structural Colors with Low-Index-Contrast Silicon Metasurfaces.
Sign Up to like & getrecommendations! Published in 2022 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.2c15333
Abstract: All-dielectric structural colors are attracting increasing attention due to their great potential for various applications in display devices, imaging security certification, optical data storage, and so on. However, it remains a great challenge to achieve… read more here.
Keywords: structural colors; mie resonances; colors low; low index ... See more keywords
Numerical simulation of efficient second harmonic generation in high-index-contrast AlGaAs microring waveguide by using the discrete method
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Modern Optics"
DOI: 10.1080/09500340.2016.1255364
Abstract: We propose a high-index-contrast AlGaAs microring waveguide for efficient second harmonic generation (SHG) under near-infrared pump. The good overlap occurs between the fundamental modes of pump and second harmonic wave owing to the strong field… read more here.
Keywords: method; contrast algaas; algaas microring; second harmonic ... See more keywords
Low index contrast imaging fibers.
Sign Up to like & getrecommendations! Published in 2017 at "Optics letters"
DOI: 10.1364/ol.42.001484
Abstract: We present high-resolution imaging fibers made from low-cost commercially available fiber preforms manufactured for the telecommunications industry. Our fabrication method involves multi-stacking arrays of different sized cores in order to suppress core-to-core crosstalk whilst building… read more here.
Keywords: imaging fibers; contrast imaging; index; low index ... See more keywords
Multiple patterning of holographic photopolymers for increased refractive index contrast.
Sign Up to like & getrecommendations! Published in 2018 at "Optics letters"
DOI: 10.1364/ol.43.001866
Abstract: We demonstrate that multiple exposures of a two-component holographic photopolymer can quadruple the refractive index contrast of the material beyond the single-exposure saturation limit. Quantitative phase microscopy of isolated structures written by laser direct-write lithography… read more here.
Keywords: index; patterning holographic; multiple patterning; index contrast ... See more keywords