Results 61 to 70 of about 6,680 (218)

Temperature Sensitivity of Polymer Fiber Microlasers

Photonic Sensors, 2022
There are many kinds of materials or methods used to make optical microcavities, and they have many different geometric structures. And electrospinning technique has become a very convenient and easy one to prepare polymer fiber. Based on this situation,
Chun Wang, Xiaojuan Zhang, Jiajun Ma, Kang Xie, Junxi Zhang, Zhijia Hu   +5 more
doaj   +1 more source

Low Noise and Drift Reconfigurable Solution‐Processed Chalcogenide Phase Change Metasurfaces

Small Methods, EarlyView.
Chalcogenide glasses, favored in reconfigurable optoelectronics, rely on costly ultra‐high vacuum‐based PVD methods. A cost‐effective, solution‐based approach to synthesize these materials, producing high‐quality antimony sulfide films with comparable phase change performance are introduced.
Mahirah Zaini, Abbas Sheikh Ansari, Joshua Perkins, Avik Mandal, Yedeng Fei, Ahmed H. Elfarash, Tony Kong, Behrad Gholipour   +7 more
wiley   +1 more source

Seasonal excess: Moving with place and produce through creative fieldwork

Geographical Research, EarlyView.
In this visual essay, we explore place‐based and creative approaches towards excess seasonal produce. We foreground the situated, place‐based, and rural perspectives towards farming, food waste, and notions of excess. We use reflections of creative fieldwork activities to bring into dialogue notions of coloniality, belonging, and rural livelihoods ...
Kaya Barry, Emily House, Willow Ross
wiley   +1 more source

Scattering of e Polarized Whispering-Gallery mode from Concave Boundary

Revista de Matemática: Teoría y Aplicaciones, 2012
In this work we present numerical results for the 2D problem of scattering E polarised whispering-gallery mode from concave convex perfectly conducting boundary.
Alexander P. Anyutin, V.I. Stasevich
doaj   +1 more source

Microlasers Made Entirely from Edible Substances

Advanced Optical Materials, Volume 13, Issue 22, August 5, 2025.
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

Carbonized Polymer Dots‐Based Spectrally Adaptable Photonic Microbarcodes

Advanced Optical Materials, Volume 13, Issue 22, August 5, 2025.
This study explores spectrally tunable photonics barcodes using carbonized polymer dots (CPDs) based on whispering gallery mode (WGM) photoluminescence. CPDs offer wavelength‐dependent emission from visible to near‐infrared (NIR), thereby enabling variable WGM emissions.
Barun Kumar Barman, Keisuke Watanabe, Tadaaki Nagao   +2 more
wiley   +1 more source

Excitation‐Wavelength‐Tunable Lasing in Individual Quantum Dot Superparticles

Advanced Optical Materials, Volume 13, Issue 22, August 5, 2025.
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

Whispering gallery germanium-on-silicon photodetector

Optics Letters, 2017
We design and demonstrate, to the best of our knowledge, the first whispering gallery germanium-on-silicon photodetector with evanescent coupling from a silicon bus waveguide in a CMOS-compatible process. The small footprint (63.6  μm2), high responsivity (∼1.04  A/W at 1530 nm), low bias voltage (-1  V), low dark current (2.03 nA), and large ...
Zhan Su, Ehsan Shah Hosseini, Erman Timurdogan, Jie Sun, Michele Moresco, Gerald Leake, Thomas N. Adam, Douglas D. Coolbaugh, Michael R. Watts   +8 more
openaire   +3 more sources

Brillouin lasing in whispering gallery micro-resonators

New Journal of Physics, 2015
Thresholds of stimulated Brillouin scattering (SBS) in solid-state whispering gallery mode (WGM) microresonators are analyzed. It is shown that the SBS interaction is substantially different here from that known in the bulk case and in the case of water ...
B Sturman, I Breunig
doaj   +1 more source

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

Advanced Photonics Research, Volume 6, Issue 8, August 2025.
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