Results 31 to 40 of about 29,414 (207)

Evolution of Whispering Gallery Modes in Li-Doped ZnO Hexagonal Micro- and Nanostructures

Applied Sciences, 2020
The formation of optical cavities in Li-doped ZnO nanostructures was investigated. By means of the vapor–solid method, long micro- and nanostructures with a hexagonal cross-section were grown.
Rocío Ariza, Belén Sotillo, Fernando Pavón, Ana Urbieta, Paloma Fernández   +4 more
doaj   +1 more source

Controlled tuning of whispering gallery modes of GaN/InGaN microdisk cavities [PDF]

, 2011
Controlled tuning of the whispering gallery modes of GaN/InGaN {\mu}-disk cavities is demonstrated. The whispering gallery mode (WGM) tuning is achieved at room temperature by immersing the {\mu}-disks in water and irradiating with ultraviolet (UV) laser.
Aharonovich, Igor, El-Ella, Haitham A. R., Hu, Evelyn L., Kappers, Menno J., Niu, Nan, Oliver, Rachel A, Rol, Fabian, Russell, Kasey J, Woolf, Alexander   +8 more
core   +2 more sources

Luminescent Donor‐Acceptor Radical With Propeller Chirality: Bright and Photostable Red Circularly Polarized Luminescence and Whispering Gallery Mode Resonance

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, Kenshiro Matsuda, Kosuke Anraku, Keiko Yamaoka, Taisuke Matsumoto, Fumitaka Ishiwari, Takeaki Zaima, Wataru Ota, Emiko Fujiwara, Tohru Sato, Yoshitaka Inoue, Soh Kushida, Yohei Yamamoto, Takuya Hosokai, Ken Albrecht   +14 more
wiley   +2 more sources

Theory of non-Hermitian topological whispering gallery

npj Computational Materials, 2022
Topological insulators have taken the condensed matter physics scenery by storm and captivated the interest among scientists and materials engineers alike.
René Pernas-Salomón, Li-Yang Zheng, Zhiwang Zhang, Penglin Gao, Xiaojun Liu, Ying Cheng, Johan Christensen   +6 more
doaj   +1 more source

Coexistence of electron whispering-gallery modes and atomic collapse states in graphene/WSe2 heterostructure quantum dots

Nature Communications, 2022
The whispering-gallery mode and the atomic collapse state are two distinct resonances in condensed matter associated with relativistic massless charge carriers. Now, it is shown that these states can coexist in graphene/WSe2 heterostructure quantum dots.
Qi Zheng, Yu-Chen Zhuang, Qing-Feng Sun, Lin He   +3 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, Baron J. W. Strutt Rayleigh, G. Mie, L. Rayleigh, S. Reynaud, V. V. Nesvizhevsky   +5 more
core   +1 more source

Spherical whispering‐gallery‐mode microresonators

Laser & Photonics Reviews, 2010
AbstractWhispering‐gallery modes (WGM) on a spherical surface were first described by Lord Rayleigh at the beginning of the last century, but only after the invention of laser did they start to have some scientific relevance and only during the last two decades there has been a substantial move towards real devices and practical applications.
A Chiasera, Y Dumeige, P Féron, M Ferrari, Y Jestin, G Nunzi Conti, S Pelli, S Soria, GC Righini   +8 more
openaire   +2 more sources

Numerical simulation of multi-color laser generation in Tm-doped tellurite microsphere at 1.9, 1.5 and 2.3 microns

Results in Physics, 2020
We present the first detailed theoretical analysis of multi-color continuous wave lasing in Tm-doped tellurite spherical microresonators with whispering gallery modes pumped at a wavelength of 792 nm.
E.A. Anashkina, G. Leuchs, A.V. Andrianov   +2 more
doaj   +1 more source

Modal domains and selectivity in large square lasers

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
Modes in square resonators have C4v symmetry. A special set of modes in these resonators have odd parities and behave like whispering gallery modes. These quasi-whispering gallery modes have high quality factors and exhibit interesting features.
Liming Liu, Ziyuan Li, Haroldo T. Hattori   +2 more
doaj   +1 more source

(INVITED) Monolithic total internal reflection resonators for applications in photonics

Optical Materials: X, 2019
Monolithic total internal reflection resonators confine light through traveling-waves that can feature high quality factors and small mode volumes.
Guoping Lin, Yanne K. Chembo
doaj   +1 more source