Results 131 to 140 of about 2,226 (169)
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Nonlinear Whispering Gallery Modes
Physical Review Letters, 1999The stationary lasing of the modes in a microdisk is formulated as a nonlinear eigenvalue problem for a nonlinear Maxwell equation. It is shown that whispering gallery modes can be obtained as stationary lasing solutions with finite pumping thresholds.
Takahisa Harayama +2 more
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Whispering Gallery Modes at THz
Advanced Optical Materials, 2019AbstractWhispering 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
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Whispering Gallery Modes Microcavity
2021This 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 Mode Devices
2020Whispering 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
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Nonlinear whispering-gallery modes in a microellipse cavity
Optics Letters, 2004We study theoretically the effect of deformed microelliptical cavities on lasing characteristics. We show that the transition of stationary lasing states from unidirectional rotational waves to a mixture of clockwise and anticlockwise rotational waves occurs when the shape of a disk is deformed to that of an ellipse.
Satoshi, Sunada +2 more
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Whispering gallery mode profiles in a coated microsphere
The European Physical Journal Special Topics, 2014The 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 +9 more
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Whispering-gallery laser resonators. I. Diffraction of whispering-gallery modes
IEEE Journal of Quantum Electronics, 1991Whispering-gallery optics for use at soft X-ray and extreme ultraviolet wavelengths are examined for their potential applications in laser resonators. An examination is made of beam divergence at the exit of a whispering gallery resonator. The properties of whispering-gallery eigenmodes are reviewed, and the features of their Fourier transforms ...
J.P. Braud, P.L. Hagelstein
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Whispering gallery mode microresonators: Fundamentals and applications
La Rivista del Nuovo Cimento, 2011Confinement of light into small volumes has become an essential requirement for photonic devices; examples of this trend are provided by optical fibers, integrated optical circuits, semiconductor lasers, and photonic crystals. Optical dielectric resonators supporting Whispering Gallery Modes (WGMs) represent another class of cavity devices with ...
GC Righini +6 more
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Whispering gallery mode microresonators as polarization converters
Optics Letters, 2007A ring resonator coupled to a waveguide can be used as a highly efficient polarization converter when the input is properly polarized. We model this phenomenon and verify the predictions with a demonstration of very efficient polarization conversion (>90%) on a silica microsphere coupled to a tapered optical fiber.
Pablo, Bianucci +4 more
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Polymeric whispering gallery mode micro-resonators
2016 IEEE Photonics Conference (IPC), 2016We review fabrication and optics of polymeric high-Q whispering gallery mode resonators. They are employed as bio-sensors featuring selective parallel functionalization of arrays and integration into lab-on-a-chip systems. Liquid crystalline elastomers enable wide tunability of resonances.
Kalt, H +13 more
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