Results 181 to 190 of about 128,373 (221)

Whispering Gallery Mode Devices

2020
Whispering gallery mode (WGM) resonators and lately photonic crystal resonator based devices are attractive due to their potential applications in photonics and recently in biophotonics as is described in the previous chapter. Applications which have been realized include for example lasers, filters, optical switches and biosensors.
Dominik Gerhard Rabus, Cinzia Sada
openaire   +2 more sources

Whispering Gallery Modes at THz

Advanced Optical Materials, 2019
AbstractWhispering gallery modes (WGM) offer strong confinement of electromagnetic radiation to specific resonances supported by the geometry of the resonator. In fact, highest ever quality factors are reported in optical and near‐infrared WGMs along with their applications.
Shriganesh S. Prabhu, Venu Gopal Achanta
openaire   +2 more sources

Dispersion compensation in whispering-gallery modes

Journal of the Optical Society of America A, 2003
We show that manipulation by a spatial profile of the refractive index of a circularly symmetric dielectric cavity results in a novel way of fine tuning frequency separations as well as spatial localizations of high-Q whispering-gallery modes excited in the cavity.
Andrey B. Matsko, Vladimir S. Ilchenko, Lute Maleki, Anatoliy A. Savchenkov   +3 more
openaire   +3 more sources

Whispering Gallery Modes Microcavity

2021
This chapter introduces the origin of the Whispering-gallery modes (WGM) microcavities. The WGM microcavities have independent optical and mechanical properties. Several terminologies, such as optical or mechanical quality factor, used in cavities are introduced. The mode characterization and field distribution of the microsphere is discussed.
openaire   +2 more sources

Whispering-gallery mode terahertz pulses

Optics Letters, 2002
We report what is to our knowledge the first observation of a subpicosecond terahertz (THz) pulse propagating as a superposition of the whispering-gallery modes (WGMs) of a dielectric cylinder. The WGM THz pulses are coupled into and out of a 5-mm-diameter silicon cylinder via a 100-mum -thick, single-mode silicon slab waveguide.
Daniel R. Grischkowsky, Jiangquan Zhang
openaire   +3 more sources

Whispering gallery mode diamond resonator

Optics Letters, 2013
We demonstrate a nearly spherical diamond whispering gallery mode resonator with quality factor (Q factor) Q=2.4×10(7) limited by material loss approaching α=4×10(-3) cm(-1). The Q factor does not depend on the wavelength: it is approximately the same at 1319 and 1550 nm. Resonators with this range of Q (
L. Maleki, Andrey B. Matsko, A. M. Bennett, Vladimir Ilchenko, P. Santini, Anatoliy A. Savchenkov   +5 more
openaire   +3 more sources

Whispering gallery mode profiles in a coated microsphere

The European Physical Journal Special Topics, 2014
The properties of whispering gallery modes (WGM) of a microsphere can be tailored by coating the resonator with a thin film. If the coating has a higher refractive index than the microsphere core, the resulting structure will have a configuration which has similarities both with a classical WGM resonator and with a planar waveguide.
Davor Ristic, Andrea Chiappini, Maurizio Mazzola, Daniele Farnesi, Gualtiero Nunzi Conti, Giancarlo C Righini, Patrice Feron, Gilles Cibiel, Maurizio Ferrari, Mile Ivanda   +9 more
openaire   +6 more sources

Parity-time-symmetric whispering-gallery mode nanoparticle sensor [Invited]

, 2018
We present a study of single nanoparticle detection using parity-time (PT) symmetric whispering-gallery mode (WGM) resonators. Our theoretical model and numerical simulations show that, with balanced gain and loss, the PT-symmetric WGM nanoparticle ...
Weijian Chen, Jing Zhang, B. Peng, Ş. Özdemir, Xudong Fan, Lan Yang   +5 more
semanticscholar   +1 more source

Whispering Gallery Mode Biosensor

2010
None of civilization’s socio-political catastrophes (e.g. world wars) have caused an equivalent destructive effect on the world’s population as biological pandemics [1]. Exponentially growing pathogens are difficult to contain and eliminate unless they can be detected early on.
Stephen Arnold, S. I. Shopova
openaire   +2 more sources

Nonlinear photonics with high-Q whispering-gallery-mode resonators

, 2017
High- and ultrahigh-Q whispering-gallery mode resonators have the capability to trap photons by total internal reflection for a duration ranging from nanoseconds to milliseconds.
G. Lin, A. Coillet, Y. Chembo
semanticscholar   +1 more source