Results 81 to 90 of about 128,373 (221)
Advanced Physics Research, EarlyView.The geometrical shaping of coumarin‐153 single crystals into next‐generation disc and ring resonators using Xe‐plasma FIB milling is demonstrated. Optimized beam parameters (30 kV, 100 pA/50 pA) enabled precise fabrication. This approach minimizes structural damage while ensuring high‐quality photonic traits.
Melchi Chosenyah +5 more
wiley +1 more source
IEEE Photonics Journal, 2021 We propose a theoretical analysis of the stochastic dynamics of miniature optoelectronic oscillators (OEOs) based on whispering-gallery mode resonators.
Helene Nguewou-Hyousse, Yanne K. Chembo
doaj +1 more source
All‐Dielectric Metawaveguide Ring Resonators with Deeply Sub‐Diffractive Mode Volumes
Laser &Photonics Reviews, EarlyView.This article presents the theory, simulation, and experimental realization of whispering gallery mode resonators capable of achieving deeply sub‐diffractive mode volumes, V << 2πR(λ0/2n)2, while preserving high Q factors. Rather than relying on plasmonics to reduce the mode volume, this work relies on nanostructured all‐dielectric metamaterial ...
Saddam Gafsi, Judson D. Ryckman
wiley +1 more source
Sensing and lasing applications of whispering gallery mode microresonators
, 2018 Optical whispering gallery mode (WGM) microresonators have attracted great attention due to their remarkable proper-ties such as extremely high quality factor, small mode volume, tight confinement of modes, and strong evanescent field.
Yu Zheng +8 more
semanticscholar +1 more source
Direct Writing of Photonic Structures by Two-Photon Polymerization
MATEC Web of Conferences, 2013 Single-mode dielectric-loaded surface plasmon-polariton nanowaveguides with strong mode confinement at excitation wavelength of 830 nm and high-Q polymer whispering gallery mode microcavities with surface roughness less than 12 nm have been directly ...
Li Yan +5 more
doaj +1 more source
Temperature Sensitivity of Polymer Fiber Microlasers
Photonic Sensors, 2022 There are many kinds of materials or methods used to make optical microcavities, and they have many different geometric structures. And electrospinning technique has become a very convenient and easy one to prepare polymer fiber. Based on this situation,
Chun Wang +5 more
doaj +1 more source
TeraHz tuning of whispering gallery modes in a PDMS, stand-alone, stretchable microsphere [PDF]
Optics Letters, Vol. 37, Issue 22, pp. 4762-4764 (2012), 2012 We report on tuning the optical whispering gallery modes in a poly dimethyl siloxane-based (PDMS) microsphere resonator by more than a THz. The PDMS microsphere system consists of a solid spherical resonator directly formed with double stems on either side.
arxiv +1 more source
Collective Excitonic Assembly in Perovskite Superlattice
Laser &Photonics Reviews, EarlyView.Schematic depiction of CESF, illustrating that once the excitation laser density surpasses the threshold, the whispering gallery mode is initiated, resulting in the appearance of the CESF effect with an increase in collective dipole density. Time evolution of coherence properties under two‐beam excitation for delay times tD<0.1$t_D<0.1$ ps in CESF ...
Jiqing Tan +11 more
wiley +1 more source
Small, EarlyView.This review describes recent (mostly last five years) progress in the synthesis, structural characterization, and properties of nanotubes from layered transition metal dichalcogenides, including in‐silico investigations. In the picture, ultra long multiwall nanotubes (up to 0.5 mm) nanotubes reported in Ref.
Lena Yadgarov, Reshef Tenne
wiley +1 more source
Waveguide couplers for ferroelectric optical resonators [PDF]
arXiv, 2014 We report a study of using the same material to fabricate a whispering gallery mode resonator and a coupler. Coupling to high Q whispering gallery modes of the lithium niobate resonator is demonstrated by means of the titanium-doped waveguide. The waveguide coupling approach opens possibilities for simpler and wider practical usage of whispering ...
arxiv