Results 81 to 90 of about 19,023 (293)

Polarization insensitive perfect absorber with nanorod arrays

, 2014
We propose a polarization insensitive near infrared perfect absorber (PA) based on the localized surface plasmon resonances (LSPRs) of nanorod arrays. Polarization insensitivity of our PA structure is achieved by combining two sets of nanorods with x and
Zhaoyu Zhang, Guangyao Su, Zhang, Zhaoyu, Zhao, Fengyun, Fengyun Zhao, Su, Guangyao   +5 more
core   +1 more source

Probing Near‐Field EM Fluctuations in Superparamagnetic CoFeB With NV Quantum Dephasometry

Advanced Optical Materials, EarlyView.
We non‐invasively investigate the superparamagnetic spin dynamics of a 1.1 nm CoFeB layer by probing its near‐field EM fluctuations using NV centers‐based quantum dephasometry. Our findings are further supported by theoretical modeling and SQUID‐based magnetization characterization. These results provide critical insight into the magnetization dynamics
Shoaib Mahmud, Wei Zhang, Pronoy Das, Angshuman Deka, Wenbo Sun, Zubin Jacob   +5 more
wiley   +1 more source

Miniaturized single layer ultra-thin polarization insensitive metasurface absorber

Frontiers in Physics
The current spatial electromagnetic environment is complex and dynamic, with electromagnetic interference and pollution growing increasingly severe. Utilizing electromagnetic wave manipulation technology to absorb and convert waste electromagnetic energy
Fajian Zhen, Yunqing Liu, Junwei Dong, Shiyuan Kong, Feng Jia, Ravi Kumar Arya   +5 more
doaj   +1 more source

Photonic crystal based polarization insensitive flat lens

, 2017
The paper proposes a new design of an inhomogeneous artificially created photonic crystal lens structure consisting of annular dielectric rods to efficiently focus both transverse electric and transverse magnetic polarizations of light into the same ...
 Kurt, Hamza, E Bor, Bor, E., M Turduev, Kurt, H., H Kurt, Turduev, M., Turduev, Mirbek,  Bor, E., Kurt, Hamza   +9 more
core   +1 more source

On‐Chip Saturated Absorption of CO2 in a Silicon‐on‐Sapphire Waveguide

Advanced Optical Materials, EarlyView.
We demonstrate the first saturated absorption of a molecular gas on a planar photonic chip. By coupling carbon dioxide with the tightly confined light of a silicon‐on‐sapphire waveguide, we achieve optical saturation using only milliwatt powers. This breakthrough provides a practical, low‐power foundation for creating ultra‐compact mid‐infrared ...
Shahar Edelstein, Noa Mazurski, Uriel Levy   +2 more
wiley   +1 more source

Polarization Insensitive Compact Wide Stop-band Frequency Selective Surface

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
A compact, polarization insensitive, wide stop band frequency selective surface is presented. The unit cell is designed by modifying the basic square loop FSS.
D. Sood, C. C. Tripathi
doaj   +1 more source

Waveguide Geometry–Driven Trade‐Offs in Resonant Cavity Sensor Performance

Advanced Optical Materials, EarlyView.
Waveguide geometry governs the interplay between sensitivity, intrinsic Q‐factor, and wavelength noise in silicon nitride resonant sensors. Contrary to intuition, higher sensitivity does not ensure superior performance. Low‐noise, high‐Q ridge resonators achieve the lowest detection limits, revealing that detection is ultimately constrained by noise ...
Mohammad Talebi Khoshmehr, Bakiye Imran Akca, Mateusz Słowikowski, Drecka Dagmara, Marcin Juchniewicz, Ryszard Piramidowicz, Muhammad Ali Butt   +6 more
wiley   +1 more source

Performance of the coherent optical binary polarization-shift-keying heterodyne system in free space optical communications using a lognormal atmospheric turbulence model MIC-CPE 2010

, 2010
In this paper, simulation results for the bit error rate (BER) performance and fading penalty of a coherent optical binary polarization shift keying (2PolSK) heterodyne system adopted for free space optical (FSO) communication links with a log-normal ...
Ghassemlooy, Zabih, Popoola, Wasiu Oyewole, Tang, Xuan, Rajbhandari, Sujan, Lee, Chung Ghiu   +4 more
core  

A broadband achromatic polarization-insensitive metalens consisting of anisotropic nanostructures

, 2018
Metasurfaces have attracted widespread attention due to an increasing demand of compact and wearable optical devices. For many applications, polarization-insensitive metasurfaces are highly desirable and appear to limit the choice of their constituent ...
Alexander Y. Zhu (1640530), Wei Ting Chen (1603057), Jared Sisler (5982320), Federico Capasso (1394371), Zameer Bharwani (4926574)   +4 more
core   +1 more source

Overcoming the Trade‐Off Between Magnetic Coupling and Electrical Insulation in Soft Magnetic Materials via Nanochain Engineering

Advanced Science, EarlyView.
This study employs a nanochain engineering approach combined with an in situ oxidation strategy to fabricate self‐insulating iron‐based magnetic nanochains, addressing the challenge of balancing magnetic coupling and electrical insulation in soft magnetic materials.
Dingrong Zuo, Lichen Liu, Haibo Ke, Rongsheng Bai, Huaping Ding, Jing Zhou, Zhenxiang Cheng, Peng Yu, Weihua Wang   +8 more
wiley   +1 more source