Results 51 to 60 of about 21,135 (203)

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

Single mode whispering-gallery-mode resonator [PDF]

, 2008
Whispering-gallery-mode (WGM) resonators configured to support only a single whispering gallery ...
Ilchenko, Vladimir, Maleki, Lutfollah, Matsko, Andrey B., Savchenkov, Anatoliy, Strekalov, Dmitry V.   +4 more
core   +1 more source

A unified approach to mode splitting and scattering loss in high-Q whispering-gallery-mode microresonators

, 2012
Current theoretical treatment of mode splitting and scattering loss resulting from sub-wavelength scatterers attached to the surface of high-quality-factor whispering-gallery-mode microresonators is not satisfactory.
Adibi, Ali, Eftekhar, Ali A., Li, Qing, Xia, Zhixuan   +3 more
core   +1 more source

Naturally-phasematched second harmonic generation in a whispering gallery mode resonator [PDF]

, 2010
We demonstrate for the first time natural phase matching for optical frequency doubling in a high-Q whispering gallery mode resonator made of Lithium Niobate.
C. Marquardt, D. Elser, D. V. Strekalov, G. Leuchs, J. U. Fürst, M. Lassen, P. D. Drummond, P. D. Drummond, U. L. Andersen   +8 more
core   +3 more sources

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

Split-disk micro-lasers: Tunable whispering gallery mode cavities

APL Photonics, 2017
Optical micro-cavities of various types have emerged as promising photonic structures, for both the investigation of fundamental science in cavity quantum electrodynamics and simultaneously for various applications, e.g., lasers, filters, or modulators ...
T. Siegle, M. Remmel, S. Krämmer, H. Kalt   +3 more
doaj   +1 more source

TeraHz tuning of whispering gallery modes in a PDMS, stand-alone, stretchable microsphere

, 2012
We report on tuning the optical whispering gallery modes in a poly dimethyl siloxane-based (PDMS) microsphere resonator by more than a THz. The PDMS microsphere system consists of a solid spherical resonator directly formed with double stems on either ...
Andrea Finizio, Armani, Chau, Chiba, Dinyari, Ferraro, Grilli, Henze, Ioppolo, Ioppolo, Ioppolo, John Daniel Riordan, Jonathan M Ward, Kim, Louyer, Ma, Mayer Alegre, Pietro Ferraro, Ramgopal Madugani, Rezac, Sara Coppola, Schäffer, Simonetta Grilli, Sumetsky, Síle Nic Chormaic, Veronica Vespini, Vollmer, von Klitzing, Ward, Watkins, White, Wiederhecker, Yong Yang   +32 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

Tests of Sapphire Crystals Produced with Different Growth Processes for Ultra-stable Microwave Oscillators

, 2015
We present the characterization of 8-12 GHz whispering gallery mode resonators machined in high-quality sapphire crystals elaborated with different growth techniques.
Dubois, Benoit, Fluhr, Christophe, Giordano, Vincent, Grop, Serge   +3 more
core   +3 more sources

A multi-color fast-switching microfluidic droplet dye laser [PDF]

, 2009
We describe a multi-color microfluidic dye laser operating in whispering gallery mode based on a train of alternating droplets containing solutions of different dyes; this laser is capable of switching the wavelength of its emission between 580 nm and ...
Abate, Adam R., Agresti, Jeremy J., Li, Zhenyu, Psaltis, Demetri, Tang, Sindy K. Y., Weitz, David A., Whitesides, George M.   +6 more
core   +1 more source