Results 191 to 200 of about 6,680 (218)

Interference of the whispering gallery states of antihydrogen

Journal of Physics B: Atomic, Molecular and Optical Physics, 2012
We theoretically study the interference of the long-living quasi-stationary quantum states of antihydrogen atoms, localized near a concave material surface. Such states are an antimatter analogue of the whispering gallery states of neutrons and matter atoms, and similar to the whispering gallery modes of sound and electro-magnetic waves. Quantum states
Voronin, A. Yu., V Nesvizhevsky, V., Reynaud, S.   +2 more
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Neutrons in a whispering gallery

Nature Physics, 2010
Quantum theory states that all objects possesses both particle and wave properties. An observation of the 'whispering gallery' modes of a curved surface shows that neutrons are no exception.
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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.
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Whispering Gallery Pulse Compressor

AIP Conference Proceedings, 2004
A barrel‐like cavity resonant at a whispering gallery mode is known as capable to provide a SLED‐like rf pulse compression. To enhance the power handling capacity of the compressor, we propose to use a coupler based on a wave tunneling through a continuous slot. A modeling low power 11.4 GHz experiment proved to be consistent with theory. A preliminary
J. Hirshfield, V. G. Pavelyev, M. I. Petelin, S. V. Kuzikov   +3 more
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Hollow whispering gallery resonators

Laser Resonators, Microresonators, and Beam Control XX, 2018
In recent years, whispering gallery mode (WGM) devices have extended their functionality across a number of research fields from photonics device development to sensing applications. Here, we will discuss some such recent applications using ultrahigh Q-factor hollow resonators fabricated from pretapered glass capillary.
Sho Kasumie, Fuchuan Lei, Ramgopal Madugani, Yong Yang, S. Nic Chormaic, Jonathan M. Ward   +5 more
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Photonic Wavepacket in Whispering-Gallery Modes

The Thirteenth International Conference on Ultrafast Phenomena, 2002
We have generated a wavepacket in optical whispering-gallery modes of a dielectric sphere and observed its round trip motion along the periphery. The data is compared with the calculation based on a Mie scattering theory.
Toshifumi Hasama, Hitoshi Kawashima
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Optical whispering-gallery microresonators

SPIE Proceedings, 1994
Quality factor 2.5 X 109 at the wavelength (lambda) equals 0.63 micrometers is reported in approximately 100 micrometers spherical resonators of fused silica with whispering-gallery modes (equivalent finesse F equals 2.5 X 106). Quality-factor 3 X 107 and effective thermal tunability of modes (up to 0.1%) is demonstrated in whispering-gallery ...
Vladimir S. Ilchenko, Mikhail L. Gorodetsky, Vladimir B. Braginsky   +2 more
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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
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Perpendicular coupler for whispering-gallery resonators

Optics Letters, 2012
In this Letter, we report on a perpendicular coupler (PC) for whispering-gallery resonators; it is a near field waveguide optimized for high coupling efficiency. The PC provides highly efficient tunneling coupling between the waveguide and microresonator without the need of a phase matching condition, and saves space for integration components ...
Fang-Weng Sun, Fang-Jie Shu, Chang-Ling Zou   +2 more
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Single molecules as whispering galleries for electrons

Journal of Physics: Condensed Matter, 2016
Whispering gallery modes, well-known for acoustic and optical waves, have been shown recently for electrons in molecules on surfaces. The existence of such waves opens new possibilities for nanoelectronic devices. Here we propose a simple analytical textbook model which allows the main characteristic features of such electronic waves to be understood ...
Guillaume Schull, Gaël Reecht, Fabrice Scheurer, Hervé Bulou   +3 more
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