Results 71 to 80 of about 23,614 (296)

High Entropy Wide‐Bandgap Borates with Broadband Luminescence and Large Nonlinear Optical properties

Advanced Functional Materials, EarlyView.
High‐entropy rare‐earth borates exhibit excellent nonlinear optical and broadband luminescence properties arising from multi‐component doping, chemical disorder, increased configurational entropy, and increased lattice and electronic anharmonicity. This formulation enabled us to obtain a large, environmentally stable single crystal with 3X higher laser‐
Saugata Sarker, Yu Wang, Yongwen Sun, Caeli Benyacko, Saeed S.I. Almishal, Tao Zhou, Zhiyu Zhang, Jadupati Nag, Himirkanti Sarkar, Jeffrey Shallenberger, Hemant Yennawar, Yang Yang, Jon‐Paul Maria, Zhiqiang Mao, Venkatraman Gopalan   +14 more
wiley   +1 more source

Chaos synchronization in chaotic current modulated VCSELs by bidirectional coupling

Chaos Theory and Applications, 2021
This paper reports on the synchronization proprieties in bidirectional coupled current modulated vertical cavity surface-emitting lasers (CMVCSELs) based on the combined model of Danckaert et al.. Regular pulse packages and chaotic behaviors are found in
Nasr Saeed, Alex Stéphane Kemnang Tsafack, Sifeu T. Kingni, Boudoue Malwe Hubert   +3 more
doaj   +1 more source

High-speed 850 nm VCSELs with 28 GHz modulation bandwidth operating error-free up to 44 Gbit/s [PDF]

, 2012
A new generation of high-speed oxide confined 850 nm vertical cavity surface-emitting lasers is presented. A record high modulation bandwidth of 28 GHz is achieved and error-free data transmission at bit-rates up to 44 Gbit/s is ...
Geen, M., Gustavsson, Johan S., Haglund, Erik, Joel, A., Kögel, Benjamin, Larsson, Anders, Lawrence, R., Safaisini, Rashid, Westbergh, Petter   +8 more
core   +1 more source

Gourd‐Inspired Design of Unit Cell with Multiple Gradients for Physiological‐Range Pressure Sensing

Advanced Functional Materials, EarlyView.
Gourd‐shaped micro‐dome arrays with coordinated modulus, conductivity, and geometric gradients co‐optimize sensitivity and linearity in piezoresistive tactile sensors. Under pressure, a solid upper dome embeds into a porous lower dome, triggering rapid contact‐area growth and series‐to‐parallel conduction, enabling unsaturated, intensity‐resolved ...
Jiayi Xu, Ming Lei, Yuanzhe Liang, Biao Qi, Ziyi Dai, Yong Zhao, Bingpu Zhou   +6 more
wiley   +1 more source

Vectorial dissipative solitons in vertical-cavity surface-emitting Lasers with delays

, 2014
We show that the nonlinear polarization dynamics of a vertical-cavity surface-emitting laser placed into an external cavity leads to the formation of temporal vectorial dissipative solitons. These solitons arise as cycles in the polarization orientation,
A Perez-Serrano, C Lecaplain, CA Klausmeier, DY Tang, F Leo, F Marino, FT Arecchi, G Giacomelli, G Nicolis, H Zhang, HU Bödeker, J Javaloyes, J Javaloyes, J Javaloyes, J. Javaloyes, JK Jang, JU Kang, K Choquette, KD Choquette, L Lugiato, M Marconi, M San Miguel, M Tlidi, M Virte, M. Giudici, M. Marconi, N Akhmediev, N Akhmediev, NN Rosanov, O Descalzi, P Coullet, P Genevet, P Grelu, P Grelu, QL Williams, S Barland, S Chouli, S Fauve, S. Balle, S. Barland, ST Cundiff, T Ackemann, T Elsass, WJ Firth, YV Kartashov   +44 more
core   +1 more source

Electrically injected spin-polarized vertical-cavity surface-emitting lasers [PDF]

, 2005
We report the design, fabrication, and characterization of an electrically injected, spin-polarized, vertical-cavity surface-emitting laser. We have demonstrated spin injection from the ferromagnetic semiconductor (Ga,Mn)As into In0.2Ga0.8As/GaAsIn0.2Ga0.
Bhattacharya, Pallab K., Chakrabarti, S., Holub, M., Shin, J.   +3 more
core   +1 more source

Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges

Advanced Functional Materials, EarlyView.
Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley   +1 more source

Laser Engineering of HfN‐Based Nanoparticles for Safe NIR‐I Photothermal and X‐ray Enhancing Cancer Therapies

Advanced Functional Materials, EarlyView.
In this study, we produced HfN‐based nanoparticles via femtosecond laser ablation in acetone. The nanoparticles exhibit a red‐shifted plasmonic resonance in the NIR‐I window, colloidal stability after coating with polyethyleneglycol, and excellent biocompatibility. The photothermal and X‐ray sensitization therapeutic effects were demonstrated for tumor
Julia S. Babkova, Ivan V. Zelepukin, Lyubov V. Gorelik, Anton L. Popov, Andrei I. Pastukhov, Gleb V. Tikhonowski, Maxim S. Savinov, Danil D. Kolmanovich, Nikita A. Pivovarov, Alina Yu. Kapitannikova, Anton A. Popov, Anna S. Sogomonyan, Vsevolod A. Skribitsky, Aziz B. Mirkasymov, Andrei V. Kabashin, Sergey M. Deyev   +15 more
wiley   +1 more source

Observation of slow light in the noise spectrum of a vertical external cavity surface emitting laser

, 2010
The role of coherent population oscillations is evidenced in the noise spectrum of an ultra-low noise lasers. This effect is isolated in the intensity noise spectrum of an optimized single-frequency vertical external cavity surface emitting laser.
A. El Amili, A. E. Siegman, B.-X. Miranda, F. Bretenaker, F. Goldfarb, G. Baili, G. Beaudoin, G. P. Agrawal, I. Sagnes, L. Brillouin, M. Alouini, P. W. Milonni   +11 more
core   +3 more sources

Vertical-cavity surface-emitting laser with a liquid crystal external cavity [PDF]

, 2013
We have developed a technology to integrate a thin layer of liquid crystal (LC) on top of a Vertical-Cavity Surface-Emitting Laser (VCSEL). Based on this technology, we demonstrate VCSELs with a chiral liquid crystal (CLC) layer, which acts as a tuneable
Beeckman, Jeroen, Neyts, Kristiaan, Panajotov, Krassimir, Xie, Yi   +3 more
core   +2 more sources