Results 41 to 50 of about 15,894 (239)
Angewandte Chemie, EarlyView.A series of donor‐attached brominated chiral luminescent radicals (CzTTBrM, 2CzTTBrM, and 3CzTTBrM) was synthesized, showing red to near‐infrared (NIR) circularly polarized luminescence (CPL) with exceptionally high PLQY of up to 76% and markedly enhanced CPL brightness (BCPL). Doping into polystyrene microspheres further yields whispering gallery mode
Kazuhiro Nakamura +14 more
wiley +2 more sources
Ultra-high Q terahertz whispering-gallery modes in a silicon resonator
APL Photonics, 2018 We report on the first experimental demonstration of terahertz (THz) whispering-gallery modes (WGMs) with an ultra-high quality factor of 1.5 × 104 at 0.62 THz. The WGMs are observed in a high resistivity float zone silicon spherical resonator coupled to
Dominik Walter Vogt, Rainer Leonhardt
doaj +1 more source
Multiwavelength magnetic coding of helical luminescence in ferromagnetic 2D layered CrI3
iScience, 2022 Summary: Two-dimensional (2D) van der Waals (vdW) ferromagnets have opened new avenues for manipulating spin at the limits of single or few atomic layers, and for creating unique magneto-exciton devices through the coupling of ferromagnetic (FM) orders ...
Bo Peng +5 more
doaj +1 more source
Quantum structure and dynamics for atom galleries [PDF]
, 1997 The bound state structure and dynamics for an atom trap formed from the whispering gallery modes (WGMs) of a dielectric microsphere are investigated. The coupling of the quantized internal and external atomic degrees of freedom plays a fundamental role ...
Kimble, H. J., Vernooy, D. W.
core +1 more source
A Microring Resonator Based Negative Permeability Metamaterial Sensor
Sensors, 2011 Metamaterials are artificial multifunctional materials that acquire their material properties from their structure, rather than inheriting them directly from the materials they are composed of, and they may provide novel tools to significantly enhance ...
Yao-Zhong Lan +4 more
doaj +1 more source
Photonics, 2021 Optical frequency combs (OFCs) generated in microresonators with whispering gallery modes are demanded for different applications including telecommunications.
Elena A. Anashkina +8 more
doaj +1 more source
Impact of cavity spectrum on span in microresonator frequency combs
, 2013 We experimentally study the factors that limit the span in frequency combs derived from the crystalline whispering gallery mode resonators. We observe that cavity dispersion is the key property that governs the parameters of the combs resulting from ...
Baumgartel, Lukas +2 more
core +1 more source
Advances in inorganic and hybrid perovskites for miniaturized lasers
Nanophotonics, 2020 The rapid advancement of perovskite-based optoelectronics devices has caught the world’s attention due to their outstanding properties, such as long carrier lifetime, low defect trap density, large absorption coefficient, narrow linewidth and high ...
Liu Zhengzheng +4 more
doaj +1 more source
Sensors, 2022 In this work, the design of an integrated 183GHz radiometer frontend for earth observation applications on satellites is presented. By means of the efficient electro-optic modulation of a laser pump with the observed millimeter-wave signal followed by ...
Kerlos Atia Abdalmalak +5 more
doaj +1 more source
Whispering Gallery States of Antihydrogen
, 2012 We study theoretically interference of the long-living quasistationary quantum states of antihydrogen atoms, localized near a concave material surface.
A. Yu. Voronin +5 more
core +3 more sources