Results 41 to 50 of about 1,361 (200)

Microlasers Made Entirely from Edible Substances

Advanced Optical Materials, EarlyView.
Several types of microlasers made completely out of edible substances are developed. They can be embedded directly into edible products and enable the sensing of various parameters, including sugar concentration, pH, the presence of bacteria, and exposure to too‐high temperatures.
Abdur Rehman Anwar, Maruša Mur, Georgia Michailidou, Dimitrios N. Bikiaris, Matjaž Humar   +4 more
wiley   +1 more source

Dominant Loss Mechanisms of Whispering Gallery Mode RF-MEMS Resonators with Wide Frequency Coverage

Sensors, 2020
This work investigates the dominant energy dissipations of the multi-frequency whispering gallery mode (WGM) resonators to provide an insight into the loss mechanisms of the devices.
Zeji Chen, Qianqian Jia, Wenli Liu, Quan Yuan, Yinfang Zhu, Jinling Yang, Fuhua Yang   +6 more
doaj   +1 more source

Excitation‐Wavelength‐Tunable Lasing in Individual Quantum Dot Superparticles

Advanced Optical Materials, EarlyView.
Mesoscale superparticles assembled from CdSe quantum dots are shown to behave as microlasers with emission properties that can be tuned by changing the excitation wavelength. Abstract Microcavities enable precise control over light‐matter interactions, supporting a wide range of applications in photonics and optoelectronics.
Marco Reale, Pietro Castronovo, Marco Cannas, Emanuele Marino, Alice Sciortino, Fabrizio Messina   +5 more
wiley   +1 more source

Non‐Reciprocal Terahertz Topological Sensor on a Silicon Chip

Advanced Optical Materials, EarlyView.
A non‐reciprocal terahertz topological sensor (NTTS) is experimentally demonstrated on a silicon valley photonic crystal chip by detecting the thickness and position changes of a polyimide membrane. The sensor exploits detuning between clockwise and counterclockwise topological cavity modes, induced by integrated magneto‐optical InSb, to achieve non ...
Ridong Jia, Ranjan Singh
wiley   +1 more source

COUPLING RADIATION LOSS IN THE MIRROR DIELECTRIC DISK RESONATOR. PART 2. MISMATCHED WAVEGUIDE COUPLING [PDF]

Радиофизика и электроника, 2015
The coupling radiation loss of the whispering gallery mode mirror dielectric disk resonator (MDDR) with mismatched waveguides was researched. The findings are of particular interest to the developers of MDDR solid-state oscillators where semi-conductor ...
V. V. Glamazdin, M. P. Natarov, V. N. Skresanov, A. I. Shubnyj   +3 more
doaj   +1 more source

Directional Whispering Gallery Mode in Microring Lasers Enabled by Tilted Azimuthal Gratings

Advanced Photonics Research, EarlyView.
The chiral light propagation in microring lasers with active cladding, enabled by tilted azimuthal gratings, is illustrated. The symmetry of the whispering gallery mode is disrupted due to scattering losses that are determined by the tilted angle, resulting in distinct clockwise and counterclockwise light propagation, and enabling controlled chirality ...
Jinghan Chen, Adrian Abazi, Frederik van Schoonhoven, Yuji Oki, Yohei Yamamoto, Carsten Schuck, Hiroaki Yoshioka   +6 more
wiley   +1 more source

Optical Chaos Generation and Applications

Advanced Photonics Research, EarlyView.
This review comprehensively examines optical chaos generation via feedback, injection, and optoelectronic methods, emphasizing bandwidth enhancement and time‐delay suppression. Applications include chaos‐synchronized secure communication, physical random number generation, chaotic lidar for cm‐level detection, distributed fiber sensing, and terahertz ...
Wenhui Chen, Xiaoxin Mao, Junli Wang, Rong Zhang, Longsheng Wang, Zhiwei Jia, Pu Li, Anbang Wang, Yuncai Wang   +8 more
wiley   +1 more source

Light and sound interplay in whispering gallery mode resonators

Journal of the European Optical Society-Rapid Publications
Whispering Gallery Mode Resonators (WGMRs) are robust and compact structures that confine resonant photons and phonons for extended time. This extraordinary confinement greatly enhances light and sound interactions and allows a plethora of fundamental ...
Frigenti Gabriele, Farnesi Daniele, Berneschi Simone, Pelli Stefano, Righini Giancarlo C., Nunzi Conti Gualtiero, Soria Huguet Silvia   +6 more
doaj   +1 more source

Controllable Optical Bistability and Four-Wave Mixing in a Photonic-Molecule Optomechanics

Nanoscale Research Letters, 2019
We theoretically investigate the nonlinear optical phenomena including optical bistability and four-wave mixing (FWM) process in a composite photonic-molecule cavity optomechanical system.
Hua-Jun Chen, Hong-Wei Wu, Jian-Yong Yang, Xue-Chao Li, Ya-Juan Sun, Yuan Peng   +5 more
doaj   +1 more source

Theory of non-Hermitian topological whispering gallery

npj Computational Materials, 2022
Topological insulators have taken the condensed matter physics scenery by storm and captivated the interest among scientists and materials engineers alike.
René Pernas-Salomón, Li-Yang Zheng, Zhiwang Zhang, Penglin Gao, Xiaojun Liu, Ying Cheng, Johan Christensen   +6 more
doaj   +1 more source