Journal ArticleDOI
Splitting of high-Q Mie modes induced by light backscattering in silica microspheres
David S. Weiss,Vahid Sandoghdar,Jean Hare,Valérie Lefèvre-Seguin,Jean-Michel Raimond,Serge Haroche +5 more
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TLDR
It is observed that very high-Q Mie resonances in silica microspheres are split into doublets, attributed to internal backscattering that couples the two degenerate whispering-gallery modes propagating in opposite directions along the sphere equator.Abstract:
We have observed that very high-Q Mie resonances in silica microspheres are split into doublets. This splitting is attributed to internal backscattering that couples the two degenerate whispering-gallery modes propagating in opposite directions along the sphere equator. We have studied this doublet structure by high-resolution spectroscopy. Time-decay measurements have also been performed and show a beat note corresponding to the coupling rate between the clockwise and counterclockwise modes. A simple model of coupled oscillators describes our data well, and the backscattering efficiency that we measure is consistent with what is observed in optical fibers.read more
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Optomechanically Induced Transparency
Stefan Weis,R. Riviere,Samuel Deléglise,E. Gavartin,Olivier Arcizet,Albert Schliesser,Tobias J. Kippenberg +6 more
TL;DR: Electromagnetically induced transparency in an optomechanical system whereby the coupling of a cavity to a light pulse is used to control the transmission of light through the cavity may help to allow the engineering of light storage and routing on an optical chip.
Journal ArticleDOI
On-chip single nanoparticle detection and sizing by mode splitting in an ultrahigh- Q microresonator
Jiangang Zhu,Sahin Kaya Ozdemir,Yun-Feng Xiao,Yun-Feng Xiao,Lin Li,Lina He,Da-Ren Chen,Lan Yang +7 more
TL;DR: In this article, the authors report real-time detection and sizing of single nanoparticles, down to 30 nm in radius, using mode splitting in a monolithic ultrahigh-quality-factor (Q) whispering-gallery-mode microresonator.
Journal ArticleDOI
Ultralow-threshold Raman laser using a spherical dielectric microcavity
TL;DR: This work demonstrates a micrometre-scale, nonlinear Raman source that has a highly efficient pump–signal conversion (higher than 35%) and pump thresholds nearly 1,000 times lower than shown before, which represents a route to compact, ultralow-threshold sources for numerous wavelength bands that are usually difficult to access.
Journal ArticleDOI
Ultimate Q of optical microsphere resonators.
TL;DR: It is demonstrated that quality factor Q - (0.8 +/- 0.1) x 10(10) of whispering-gallery modes in fused-silica microspheres at 633 nm, close to the ultimate level determined by fundamental material attenuation as measured in optical fibers, is demonstrated.
Journal ArticleDOI
Parity–time symmetry and variable optical isolation in active–passive-coupled microresonators
Long Chang,Xiaoshun Jiang,Shiyue Hua,Chao Yang,Jianming Wen,Liang Jiang,Guanyu Li,Guanzhong Wang,Min Xiao,Min Xiao +9 more
TL;DR: In this article, the authors demonstrate parity-time-symmetric optics on a chip at the 1,550-nm wavelength in two directly coupled high-Q silica-microtoroid resonators with balanced effective gain and loss.
References
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Journal ArticleDOI
Frequency-modulation spectroscopy: a new method for measuring weak absorptions and dispersions.
TL;DR: A new type of wavelength-modulation laser spectroscopy is accomplished by utilizing an external phase modulator driven at radio frequencies large compared to the width of the spectral feature of interest.
Journal ArticleDOI
Quality-factor and nonlinear properties of optical Whispering-Gallery modes
TL;DR: In this article, the properties of optical resonators with quality-factor Q⩾108, effective volume of e.m. field localization Veff ≥ 10−9 cm3 and threshold power of optical bistability Wbist≈10−5 W are described.
Journal ArticleDOI
Observation of Resonances in the Radiation Pressure on Dielectric Spheres
Arthur Ashkin,J. M. Dziedzic +1 more
TL;DR: In this article, an experimental check of the Mie-Debye theory for the variation of radiation pressure on dielectric spheres with wavelength and size using optical-levitation techniques was performed.
Journal ArticleDOI
Very high-Q whispering-gallery mode resonances observed on fused silica microspheres
TL;DR: In this article, the whispering-gallery modes of 60 to 200 μm diameter microspheres obtained by fusing with a CO2 laser the end of a high-transmission silica fibre were studied.