Results 91 to 100 of about 63,974 (267)

Direct Measurement of the Singlet Lifetime and Photoexcitation Behavior of the Boron Vacancy Center in Hexagonal Boron Nitride

Advanced Optical Materials, EarlyView.
Negatively charged boron vacancy defects in hexagonal boron nitride promise near‐surface quantum sensing, but their internal spin transition rates are only partly understood. This work directly measures the defect's singlet‐state lifetime, 15(3) ns, using a nanosecond rise‐time dual‐pulse photoluminescence‐recovery method, and shows that high laser ...
Richard A. Escalante, Andrew J. Beling, Daniel G. Ang, Niko R. Reed, Justin J. Welter, John W. Blanchard, Cecilia Campos, Edwin Coronel, Klaus Krambrock, Alexandre S. Leal, Paras N. Prasad, Ronald L. Walsworth   +11 more
wiley   +1 more source

Electrical tunable topological valley photonic crystals for on-chip optical communications in the telecom band. [PDF]

Nanophotonics, 2022
Qi Z, Hu G, Deng C, Sun H, Sun Y, Li Y, Liu B, Bai Y, Chen S, Cui Y.   +9 more
europepmc   +1 more source

Naphthyridine‐Based Donor–Acceptor Boron Difluoride Complexes Targeting Red Emission in Organic Light‐Emitting Diodes

Advanced Optical Materials, EarlyView.
Four donor–acceptor boron difluoride complexes based on triphenylamine donor and a naphthyridine acceptor units were synthesized, studied, and applied as OLED emitters. They exhibit pronounced intramolecular charge transfer character, balanced charge transport properties, and tunable emission. Near‐unity PLQYs are achieved for selected compounds, while
Omar Lahna, Stepan Kutsiy, Dmytro Volyniuk, Roman Luboradzki, Elina Andresen, Ute Resch‐Genger, Juozas V. Grazulevicius, Pavlo Stakhira, Mykhaylo A. Potopnyk   +8 more
wiley   +1 more source

Chip‐Integrated Metasurface‐GaAsSb Nanowire Array Photodetectors for Single‐Pixel Polarimetric Imaging

Advanced Optical Materials, EarlyView.
A 2×2 multiplexed GaAsSb nanowire photodetector array integrated with L‐shaped metasurfaces is developed for miniaturized infrared polarimetry. Leveraging non‐radiating anapole states that facilitate near‐field enhancement, the device demonstrates strong polarization selectivity at 835 nm.
Longsibo Huang, Ziyuan Li, Yitao Yang, Yang Yu, Lei Xu, Li Li, Songqin Zhang, Han Wang, Wenwu Pan, Chaohao Chen, Weiqi Jin, Wen Lei, Lorenzo Faraone, Chennupati Jagadish, Lan Fu   +14 more
wiley   +1 more source

Narrow beam and low-sidelobe electro-optic beam steering on thin-film lithium niobate optical phased array

Opto-Electronic Science
Optical beam steering has become indispensable in free-space optical communications, light detection and ranging (LiDAR), mapping, and projection.
Yang Li, Shiyao Deng, Xiao Ma, Ziliang Fang, Shufeng Li, Weikang Xu, Fangheng Fu, Xu Ouyang, Yuming Wei, Tiefeng Yang, Heyuan Guan, Huihui Lu   +11 more
doaj   +1 more source

Coherent optical communications using coherence-cloned Kerr soliton microcombs. [PDF]

Nat Commun, 2022
Geng Y, Zhou H, Han X, Cui W, Zhang Q, Liu B, Deng G, Zhou Q, Qiu K.   +8 more
europepmc   +1 more source

A Proline‐Integrated Donor–Acceptor Fluorophore: Water‐Vapor‐Responsive Mechanochromic Luminescence and Latent Fingerprint Visualization

Advanced Optical Materials, EarlyView.
A proline‐integrated donor–acceptor fluorophore enables multifunctional luminescence through rational molecular design. Water‐vapor‐responsive mechanochromic luminescence (MCL) with circularly polarized luminescence (CPL) switching and efficient visualization of latent fingerprints (LFPs) are realized from this single small organic molecule.
Hao Chen, Kazuki Kato, Yoshitane Imai, Suguru Ito   +3 more
wiley   +1 more source

High-capacity free-space optical communications using wavelength- and mode-division-multiplexing in the mid-infrared region. [PDF]

Nat Commun, 2022
Zou K, Pang K, Song H, Fan J, Zhao Z, Song H, Zhang R, Zhou H, Minoofar A, Liu C, Su X, Hu N, McClung A, Torfeh M, Arbabi A, Tur M, Willner AE.   +16 more
europepmc   +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

Demonstration of Monolithic Integration of InAs Quantum Dot Microdisk Light Emitters and Photodetectors Directly Grown on On-Axis Silicon (001)

Micromachines
Silicon-based microcavity quantum dot lasers are attractive candidates for on-chip light sources in photonic integrated circuits due to their small size, low power consumption, and compatibility with silicon photonic platforms.
Shuaicheng Liu, Hao Liu, Jihong Ye, Hao Zhai, Weihong Xiong, Yisu Yang, Jun Wang, Qi Wang, Yongqing Huang, Xiaomin Ren   +9 more
doaj   +1 more source