Ultrahigh-Q and Polarization-Independent Terahertz Metamaterial Perfect Absorber
Sign Up to like & getrecommendations! Published in 2020 at "Plasmonics"
DOI: 10.1007/s11468-020-01221-8
Abstract: Ensuring a good trade-off between high-quality factor ( Q -factor) and polarization independency is a key challenge for designing practicable terahertz metamaterial devices. We propose a symmetric composite aluminum-structured metamaterial absorber to achieve high Q… read more here.
Keywords: terahertz metamaterial; metamaterial perfect; polarization independent; polarization ... See more keywords
A compact silicon-based polarization-independent power splitter using a three-guide directional coupler with subwavelength gratings
Sign Up to like & getrecommendations! Published in 2020 at "Optics Communications"
DOI: 10.1016/j.optcom.2019.125095
Abstract: Abstract A compact and polarization-independent three-guide power splitter using subwavelength gratings (SWGs) on the SOI platform is proposed and analyzed in detail, where the SWG structures are located at both sides of the central input… read more here.
Keywords: polarization independent; power splitter; three guide; power ... See more keywords
High-efficiency, polarization-independent back reflector
Sign Up to like & getrecommendations! Published in 2021 at "Optics Communications"
DOI: 10.1016/j.optcom.2020.126320
Abstract: Abstract A novel scheme to achieve a back reflector based on two-dimensional dielectric-metal graded metasurface is proposed, which presents high-efficiency over a broad range of incident solid angles and wavelengths. The remarkable performance of the… read more here.
Keywords: high efficiency; reflector; back reflector; polarization independent ... See more keywords
Polarization-independent symmetrical directional coupler utilizing orientation-engineered method on the x-cut lithium-niobate-on-insulator
Sign Up to like & getrecommendations! Published in 2021 at "Optics Communications"
DOI: 10.1016/j.optcom.2020.126365
Abstract: Abstract Due to the strong birefringence, symmetrical directional couplers (DCs) are typically polarization-sensitive in the high index contrast platforms. In this letter, we demonstrate polarization-independent directional couplers utilizing orientation-engineered method on the x-cut lithium-niobate-on-insulator (LNOI)… read more here.
Keywords: orientation; lithium niobate; polarization independent; symmetrical directional ... See more keywords
Polarization-independent highly-efficient splitter based on the cross-shaped ridge structure
Sign Up to like & getrecommendations! Published in 2022 at "Optics Communications"
DOI: 10.1016/j.optcom.2021.127499
Abstract: Abstract A polarization-independent highly-efficient transmission beam splitter based on the cross-shaped ridge structure is proposed in this paper. Based on the rigorous coupled-wave analysis (RCWA) and the simulated annealing (SA) algorithm, the efficiencies of 32.33%… read more here.
Keywords: highly efficient; polarization independent; independent highly; polarization ... See more keywords
Numerically investigating a wide-angle polarization-independent ultra-broadband solar selective absorber for high-efficiency solar thermal energy conversion
Sign Up to like & getrecommendations! Published in 2019 at "Solar Energy"
DOI: 10.1016/j.solener.2019.04.037
Abstract: Abstract In this paper, an efficient solar selective absorber based on a tungsten sphere array and a tungsten grating is proposed and demonstrated numerically. The proposed structure has a spectral range of 300–1777 nm, with an… read more here.
Keywords: polarization independent; solar selective; selective absorber; solar thermal ... See more keywords
Polarization-Independent Large Third-Order Optical Nonlinearity in Centimeter-Sized Random-Distributed Gold Nanorod Arrays
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Physical Chemistry C"
DOI: 10.1021/acs.jpcc.0c04780
Abstract: Random-distributed gold nanorod arrays (R-GNRAs) deposited on glass substrates have been systematically investigated through Z-scan, second harmonic generation (SHG), and dichromatic pump–probe mea... read more here.
Keywords: random distributed; polarization independent; gold nanorod; nanorod arrays ... See more keywords
Deterministic Approach to Achieve Broadband Polarization-Independent Diffusive Scatterings Based on Metasurfaces
Sign Up to like & getrecommendations! Published in 2017 at "ACS Photonics"
DOI: 10.1021/acsphotonics.7b01036
Abstract: Diffusive scatterings of electromagnetic (EM) waves by a thin screen are important in many applications, but available approaches cannot ensure uniform angular distributions of low-intensity scatterings without time-consuming optimizations. Here, we propose a robust and… read more here.
Keywords: deterministic approach; independent diffusive; polarization independent; diffusive scatterings ... See more keywords
Polarization-Independent, Narrowband, Near-IR Spectral Filters via Guided Mode Resonances in Ultrathin a-Si Nanopillar Arrays
Sign Up to like & getrecommendations! Published in 2019 at "ACS Photonics"
DOI: 10.1021/acsphotonics.8b01253
Abstract: We report the optical properties obtained through experiments, simulation, and theory of ultrathin ( read more here.
Keywords: nanopillar arrays; guided mode; polarization independent; narrowband ... See more keywords
Fabrication of polarization-independent waveguides deeply buried in lithium niobate crystal using aberration-corrected femtosecond laser direct writing
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/srep41211
Abstract: Writing optical waveguides with femtosecond laser pulses provides the capability of forming three-dimensional photonic circuits for manipulating light fields in both linear and nonlinear manners. To fully explore this potential, large depths of the buried… read more here.
Keywords: independent waveguides; lithium niobate; polarization independent; aberration ... See more keywords
A broadband and polarization-independent metasurface perfect absorber for hot-electron photoconversion.
Sign Up to like & getrecommendations! Published in 2022 at "Nanoscale"
DOI: 10.1039/d2nr04663f
Abstract: We report an ultra-broadband metasurface perfect absorber from the UV to NIR region based on TiN nanostructures. A polarization-independent experimental average absorption of 0.900 (0.921 in simulation) at the wavelength band from 300 nm to… read more here.
Keywords: polarization independent; hot electron; broadband; metasurface perfect ... See more keywords