Results 41 to 50 of about 2,147 (127)

Short- to Long-Reach WDM Access Network With Free Space Optical Traffic Link

IEEE Photonics Journal
In this paper, we demonstrate a free space optical (FSO) wavelength-division-multiplexing passive optical network (WDM-PON) architecture with short-reach to long-reach fiber transmission to overcome different environments and geographical restrictions ...
Chien-Yu Liao, Tsu-Hsin Wu, Chien-Hung Yeh, Wen-Paio Lin, Yu-Heng Lin, Shien-Kuei Liaw   +5 more
doaj   +1 more source

Multiple scattering of photons by atomic hyperfine multiplets

, 2005
Mesoscopic interference effects in multiple scattering of photons depend crucially on the internal structure of the scatterers. In the present article, we develop the analytical theory of multiple photon scattering by cold atoms with arbitrary internal ...
A. Omont, A. R. Edmonds, B. A. van Tiggelen, B. R. Judd, Christian Miniatura, Cord A. Müller, D. A. Varshalovich, David Wilkowski, Dominique Delande, E. Akkermans, G. Placzek, K. Blum, M. Rothenberg, R. Loudon, Robin Kaiser, V. B. Berestetskii   +15 more
core   +3 more sources

Illuminating Advances in Materials: Optical Physical Unclonable Functions for Security Applications

Advanced Optical Materials, Volume 13, Issue 29, October 13, 2025.
This review highlights Optical Physical Unclonable Functions (OPUFs) as secure, light‐driven authentication tools. It surveys material platforms including optical fibers, low‐dimensional materials, luminophores, plasmonic nanoparticles and rare earth OPUFs systems.
Syeda Ramsha Ali, Stephen V. Kershaw, Mian Muhammad Faisal, Basel Halak, Nema M. Abdelazim   +4 more
wiley   +1 more source

Tectonothermal Evolution of the NW Wyoming Province: Insights From Coupled Garnet Lu‐Hf and Sm‐Nd Geochronology

Journal of Metamorphic Geology, Volume 43, Issue 8, Page 839-862, October 2025.
ABSTRACT Understanding how Paleoproterozoic orogenic processes shaped the assembly of Laurentia remains a critical puzzle in deciphering Earth's ancient tectonic history. To address this challenge, the Montana metasedimentary terrane in the northwest Wyoming Province, which preserves a complex record of multiple metamorphic episodes, provides a unique ...
Tsai‐Wei Chen, Jeff Vervoort, Julia Baldwin, Peter Baker   +3 more
wiley   +1 more source

In Vivo Differentiation of Cutaneous Melanoma From Benign Nevi With Dual‐Modal System of Optical Coherence Tomography and Raman Spectroscopy

Journal of Biophotonics, Volume 18, Issue 9, September 2025.
An innovative method for noninvasive melanoma diagnosis using the attenuation coefficient from OCT scans and machine learning has been proposed, supporting small sample sizes. When combined with Raman spectroscopy, it can further enhance accuracy. ABSTRACT A multimodal method comprising optical imaging using OCT and molecular detection using Raman ...
Di Wu, Anatoly Fedorov Kukk, Rüdiger Panzer, Steffen Emmert, Bernhard Roth   +4 more
wiley   +1 more source

Spin and transport effects in quantum microcavities with polarization splitting

, 2010
Transport properties of exciton-polaritons in anisotropic quantum microcavities are considered theoretically. Microscopic symmetry of the structure is taken into account by allowing for both the longitudinal-transverse (TE-TM) and anisotropic splitting ...
A. Kavokin, G. E. Pikus, L. E. Golub, M. M. Glazov   +3 more
core   +1 more source

Critical slowing down of relaxation dynamics near the Curie temperature in the relaxor Pb(Sc0.5Nb0.5)O3 [PDF]

, 2009
Brillouin spectroscopy of Pb(Sc0.5Nb0.5)O3 single crystals reveals an order-disorder ferroelectric phase transition occurs at 110 °C upon cooling. A softening of the longitudinal acoustic (LA) mode is observed that can be attributed to the coupling ...
Ahart Muhtar, Bing Yonghong, Hemley Russell J., Hushur Anwar, Kojima Seiji, Ye Zuo-Guang, 小島 誠治   +6 more
core   +1 more source

Synthesis and Characterization of A3[ReO4][ReO3N] and A′2[ReO3N] (A = Rb, Cs; A′ = K, Cs)

European Journal of Inorganic Chemistry, Volume 28, Issue 17, June 17, 2025.
Various new nitridotrioxidorhenate compounds were successfully obtained via flux syntheses. By employing different equivalents of ammonium salts as a nitrogen source, it is possible to incorporate different amounts of nitrogen into perrhenates. Four new structures namely Rb3[ReO4][ReO3N], Cs3[ReO4][ReO3N], K2[ReO3N], and Cs2[ReO3N]—were elucidated and ...
Désirée Badea, Christoph Lenting, Michael Hanrath, Jörn Bruns   +3 more
wiley   +1 more source

Formation of laser plasma channels in a stationary gas

, 2005
The formation of plasma channels with nonuniformity of about +- 3.5% has been demonstrated. The channels had a density of 1.2x10^19 cm-3 with a radius of 15 um and with length >= 2.5 mm.
Dunaevsky, A., Fisch, N. J., Goltsov, A., Greenberg, J., Suckewer, S., Valeo, E.   +5 more
core   +1 more source

Assessing UVA and Laser‐Induced Crosslinking via Brillouin Microscopy

Journal of Biophotonics, Volume 18, Issue 5, May 2025.
UVA crosslinking is the primary treatment to combat keratoconus. Nevertheless, unwanted side effects and limitations due to nonselective irradiation lead to the investigation of alternative irradiation treatments. This study shows similar changes in the Brillouin frequency shift of corneas crosslinked with UVA irradiation and a NIR femtosecond laser ...
Christian A. Iriarte‐Valdez, Johannes Wenzel, Emilie Baron, Alexandra Y. Claus, Stefan Kalies, Karsten Sperlich, Oliver Stachs, Maria Leilani Torres‐Mapa, Alexander Heisterkamp   +8 more
wiley   +1 more source