Results 181 to 190 of about 1,361 (200)

Interaction of whispering-gallery electromagnetic waves with acoustic waves in tapered quartz rods

Quantum Electronics, 2001
The propagation of whispering-gallery waves in a dynamic cavity formed by a tapered quartz rod and the plane interface between two regions of the rod with different refractive indices moving along the axis of the rod is analysed. It is shown that the limiting frequency shift of light in such a cavity is determined by its Q factor and the attainable ...
V P Torchigin, Vladimir A. Sychugov, L. N. Magdich   +2 more
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Wave beam shaping on diffraction of a whispering gallery wave at a convex cylindrical surface

Radiophysics and Quantum Electronics, 1988
LITERATURE CITED i. M.L. Ter-Mikaelyan, Izv. Akad. Nauk ArmSSR, Erevan (1969). 2. V.L. Gunzburg and V. N. Tsytovich, Transition Radiation and Transition Scattering [in Russian, Nauka, Moscow (1984). 3. V.G. Baryshevskii and I. D. Feranchuk, Zh. ~ksp. Teor. Fiz., 61, No. 3(9), 949 (1971). 4. V.G.
E. V. Sheinina, M. A. Shapiro, S. N. Vlasov   +2 more
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Internal acoustical excitation of shells: Scholte and whispering gallery-type waves

Journal of Applied Physics, 1989
The authors study the acoustic radiation from cylindrical elastic shells immersed in water and containing an internal acoustic source. To this end, they use the method of isolation and identification of resonances (MIIR) perfected at Le Havre in the 1980’s [G. Maze and J. Ripoche, Phys. Lett. 84A, 309 (1981); Rev. Phys. Appl.
J.L. Rousselot, Jean-Louis Izbicki, Jean Ripoche, Gérard Maze, P. Pareige   +4 more
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Whispering-gallery waves in a neighborhood of an inflection point of the boundary. Asymptotics of the wave field as t??

Journal of Soviet Mathematics, 1986
Translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 140, 151-166 (Russian) (1984; Zbl 0557.35097).
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Whispering gallery traveling wave interferometer for low phase noise applications

Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004., 2005
Traveling wave filters utilizing sapphire resonators excited at whispering gallery modes (WGR) have a good perspective for application as a microwave interferometer in the field of ultralow phase noise microwave sources. Our paper examines in detail a classical approach of a traveling wave (TW) disk dielectric WGR coupled with a dielectric waveguide ...
D.P. Tsarapkin, N.A. Shtin
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Polarization and losses of whispering-gallery waves along twisted trajectories

Journal of the Optical Society of America, 1979
A geometrical optics treatment shows that whispering-gallery waves following twisted trajectories can be in eigenstates of polarization if σ = (radius of curvature × torsion) is a constant. The Jones vectors of these eigenpolarizations are calculated, along with their propagation constants and power attenuation constants.
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Terahertz Broadband Whispering-Gallery Mode Gyrotron Backward-Wave Oscillator

IEEE Transactions on Electron Devices, 2019
Conventional gyrotron backward-wave oscillators (gyro-BWOs) operate in a low-order mode, e.g., TE $_{0,1}$ mode. As the operating frequency extends to the terahertz (THz) band, the transverse size of low-order mode cavity shrinks, and the power capability is reduced, consequently.
Shi Pan, Chao-Hai Du, Hui-Qi Bian, Zi-Chao Gao, Fan-Hong Li, Pu-Kun Liu   +5 more
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Continuous-wave whispering-gallery optical parametric oscillator for high-resolution spectroscopy

Optics Letters, 2015
We achieve a continuous operation of a whispering gallery optical parametric oscillator by stabilizing the resonator temperature T on the mK level and simultaneously locking the pump frequency to a cavity resonance using the Pound-Drever-Hall technique.
Werner, Christoph Sebastian, Buse, Karsten, Breunig, Ingo   +2 more
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the whispering gallery waves in a disk dielectric resonator located on a dielectric substrate

Radioelectronics and Communications Systems, 2006
The paper is devoted to investigation of peculiarities of natural azimuthal electromagnetic oscillations in a dielectric resonator located on a substrate, whose permittivity is lower than that of the material of the main resonator. The impact of the dielectric substrate thickness on the spectrum of natural frequencies of the resonant structure is ...
Kirichenko, Alexander Ya., Martynyuk, S. P., Motornenko, A. P., Skuratovskiy, I. G.   +3 more
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Integrated terahertz source based on three-wave mixing of whispering-gallery modes

Optics Letters, 2008
We propose an integrated terahertz emitter operating at room temperature between 2.4 and 6 THz. Based on difference-frequency generation in a triply resonant Au/AlAs/GaAs/AlAs/Au microcylinder, this nonlinear source is pumped by two near-IR whispering-gallery modes that are excited by InAs quantum dots embedded in the resonator.
Julien Claudon, Jean-Michel Gérard, Alessio Andronico, Vincent Berger, Giuseppe Leo   +4 more
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