Results 51 to 60 of about 19,826 (214)

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Talbot interference of whispering gallery modes

APL Photonics
The Talbot self-imaging phenomenon is a fundamental interference effect that is natural to all waves with a periodic structure. We theoretically and experimentally study the Talbot effect for optical waves in the transverse angular domain using ...
Matias Eriksson, Benjamin A. Stickler, Robert Fickler   +2 more
doaj   +1 more source

POSSIBILITY FOR FREQUENCY STABILIZATION OF MILLIMETER WAVELENGTH SOLID-STATE SOURCE BY A SCREENED DIELECTRIC RESONATOR [PDF]

Radio Physics and Radio Astronomy, 2016
Purpose: Showing the possibility in principle of the use of a screened dielectric resonator excited by the planar waveguide to stabilize the frequency of solid-state sources in the millimeter wavelength range.
A. E. Kogut, I. K. Kuz’michev, R. S. Dolia, S. O. Nosatiuk, Ye. A. Shulga   +4 more
doaj   +1 more source

Cavity QED with Diamond Nanocrystals and Silica Microspheres

, 2006
Normal mode splitting is observed in a cavity QED system, in which nitrogen vacancy centers in diamond nanocrystals are coupled to whispering gallery modes in a silica microsphere.
Armani D. K., Beveratos A., Boca A., Braginsky V. B., Buck J. R., Cai M., Cavity Quantum Electrodynamics, Cirac J. I., Fan X., Jelezko F., Jelezko F., Jelezko F., Kennedy T. A., Kimble H., Kuhn S., Kurtsiefer C., Lacey S., Lacey S., Le Thomas N., Lefevre-Seguin V., Mabuchi H., Maunz P., Pellizzari T., Raimond J. M., Redman D., Reithmaier J. P., Spillane S. M., Treussart F., Wallraff A., Wang H., Yao W., Yoshie T.   +31 more
core   +1 more source

Chameleonic Color‐Variable Microbead Emitters for Multilevel Spectroscopic Encryption from Visible to Infrared Wavelengths

Advanced Optical Materials, EarlyView.
Whispering‐gallery‐mode microresonators with sharp resonant peaks enable photonic barcoding. Similar to a chameleon, a rare‐earth‐free microcavity with π‐conjugated PAHs enables visibleto‐near infrared color generation from a single microbead. The unique resonat emission (spectral barcode) can be dynamically transformed via excitation wavelength change,
Barun Kumar Barman, Keisuke Watanabe, Kenzo Deguchi, Shinobu Ohki, Kenjiro Hashi, Atsushi Goto, Tadaaki Nagao   +6 more
wiley   +1 more source

Excitation of forced modes in the dielectric disk resonator-diffraction grating system [PDF]

Журнал нано- та електронної фізики, 2010
In this work the strip-like diffraction grating influence on the spectrum of “whispering gallery” modes of the disk dielectric resonator was studied experimentally. The conditions of single-mode excitation in a wide frequency range had been defined.
A.I. Fisun, O.N. Sukhoruchko, O.I. Belous   +2 more
doaj  

Trapping Electromagnetic Solitons in Cylinders

Mathematical Modelling and Analysis, 2014
Electromagnetic waves in vacuum or dielectrics can be confined in unbounded cylinders in such a way that they turn around the main axis. For particular choices of the cylinder's section, interesting stationary configurations may be assumed.
Daniele Funaro
doaj   +1 more source

Thermal shift of whispering gallery modes in tellurite glass microspheres

Results in Physics, 2020
The tremendous progress made in recent years in the production of tellurite glasses has led to the development of different optical elements and devices on their basis such as microresonators and microlasers.
A.V. Andrianov, M.P. Marisova, V.V. Dorofeev, E.A. Anashkina   +3 more
doaj   +1 more source

Modified permittivity observed in bulk Gallium Arsenide and Gallium Phosphide samples at 50 K using the Whispering Gallery mode method

, 2008
Whispering Gallery modes in bulk cylindrical Gallium Arsenide and Gallium Phosphide samples have been examined both in darkness and under white light at 50 K. In both samples we observed change in permittivity under light and dark conditions.
Cros, D., Floch, J-M. Le, Hartnett, J. G., Krupka, J., Mouneyrac, D., Tobar, Michael E.   +5 more
core   +1 more source

Photon‐Sphere Modes in Curved Optical Microcavities: A Black‐Hole Analogue Laser

Advanced Science, EarlyView.
An optical analogue of a Schwarzschild black hole is realized using curved microcavities that preserve light‐like geodesics. A new family of laser modes confined around the photon sphere is identified alongside conventional whispering‐gallery modes. Analytical theory, numerical simulations, and experiments reveal curvature‐induced confinement, enabling
Chenni Xu, Aswathy Sundaresan, Nazire‐Begüm Kazkal, Clement Lafargue, Lior Zarfaty, Li‐Gang Wang, Ofek Birnholtz, Dominique Decanini, Melanie Lebental, Patrick Sebbah   +9 more
wiley   +1 more source