Results 61 to 70 of about 52,255 (282)

Low and high intensity velocity selective coherent population trapping in a two-level system [PDF]

, 2009
An experimental investigation is made of sub-recoil cooling by velocity selective coherent population trapping in a two-level system in Sr. The experiment is carried out using the narrow linewidth intercombination line at 689 nm.
A. Kastberg, D. Wilkowski, M. Chalony, Peters A., R. Kaiser   +4 more
core   +4 more sources

Characterization and Design Framework for Micro‐ and Nanoscale Printed Metal Interconnects in Hybrid Electronic Systems

Advanced Materials Technologies, EarlyView.
This work establishes a framework for high‐resolution printed interconnects by coupling e‐jet printing control, multilayer deposition, and sintering optimization. Ink properties and printing speed influence particle stacking, while different sintering atmospheres drive distinct microstructural evolution.
Kaifan Yue, Siddharth Kurup, Rebecca Banner, Calib Lanier, Eric Vogel, Michael Filler, Kira Barton   +6 more
wiley   +1 more source

Subwavelength-grating coupled-cavity resonance VCSELs with ultra-narrow linewidth

APL Photonics
Vertical-cavity surface-emitting lasers (VCSELs) characterized by compactness, high stability, and narrow linewidths are of significant interest for miniature atomic sensing applications.
Li-shan Fu, Ning Cui, Feng Zhang, Ji-sheng Wang, Ao Qiu, Bao-lu Guan, Ai-Qun Liu   +6 more
doaj   +1 more source

Tunable Narrow-Linewidth Si₃N₄ Cascaded Triple-Ring External-Cavity Semiconductor Laser for Coherent Optical Communications

Photonics
We propose an external-cavity laser that combines wide tunability with narrow linewidth. The design utilizes a low-loss Si3N4 waveguide and a thermally tuned cascaded triple-ring resonator to enable continuous wavelength tuning. The numerical simulations
Tong Wang, Yuchen Hu, Wen Zhou, Ye Wang
doaj   +1 more source

2.58 kW Narrow Linewidth Fiber Laser Based on a Compact Structure with a Chirped and Tilted Fiber Bragg Grating for Raman Suppression

Photonics, 2021
We report a high power, narrow linewidth fiber laser based on oscillator one-stage power amplification configuration. A fiber oscillator with a center wavelength of 1080 nm is used as the seed, which is based on a high reflection fiber Bragg grating (FBG)
Xin Tian, Chenhui Gao, Chongwei Wang, Xiaofan Zhao, Meng Wang, Xiaoming Xi, Zefeng Wang   +6 more
doaj   +1 more source

Extending Timescales and Narrowing Linewidths in NMR

CHIMIA, 2011
Among the different fields of research in nuclear magnetic resonance (NMR) which are currently investigated in the Laboratory of Biomolecular Magnetic Resonance (LRMB), two subjects that are closely related to each other are presented in this article.
Segawa, Takuya F, Bornet, Aurélien, Salvi, Nicola, Miéville, Pascal, Vitzthum, Veronika, Carnevale, Diego, Jannin, Sami, Caporini, Marc A, Ulzega, Simone, Vasos, Paul R, Rey, Martial, Bodenhausen, Geoffrey   +11 more
openaire   +6 more sources

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

Molecular Inks for the Development of Complex 3D In‐Mold Electronics

Advanced Materials Technologies, EarlyView.
Molecular inks (MINKs) enable the fabrication of thermoformed 3D circuits by decoupling the forming and metallization steps. Following thermoforming, intense pulsed‑light or thermal processing converts the patterned MINKs into complex 3D conductive tracks with improved stretchability and electrical performance, advancing low‑cost, high‑performance in ...
Mehal P. Kushalkar, Hiroshi Fukutani, Olga Mozenson, Jianying Ouyang, Liliana Gaburici, Bhavana Deore, Dayna Bennett, Chantal Paquet, Paul Trudeau, Loleï Khoun, Nicolas Milliken, Olivier Ferrand, Julie Ferrigno, Xiangyang Liu, Arnold J. Kell   +14 more
wiley   +1 more source

Suppression of beating noise of narrow-linewidth erbium-doped fiber ring lasers by use of a semiconductor optical amplifier [PDF]

, 2003
Beating noise in narrow-linewidth erbium-doped fiber ring lasers puts severe limitations on applications of the lasers. We demonstrate the suppression of beating noise in fiber ring lasers by using a semiconductor optical amplifier in the laser cavity ...
Baby, Varghese, Glesk, Ivan, Prucnal, Paul R., Xu, Lei   +3 more
core   +1 more source

Highly Anisotropic Quasi‐Direct Organic Metal Halide Hybrids: A Platform for Polarization‐Sensitive Optoelectronics

Advanced Materials Technologies, EarlyView.
One‐dimensional C4N2H14PbBr4 is shown to have a quasi‐direct electronic band structure and strongly anisotropic transport with polarized broadband emission. A GW/Bethe–Salpeter excited‐state force formalism, supported by polarized Raman and temperature‐dependent photoluminescence, identifies low–frequency Pb–Br phonons that drive ultrafast exciton self‐
Rijan Karkee, Rafael R. Del Grande, Yeonjoo Lee, Jinkyoung Yoo, Azza Ben‐Akacha, Biwu Ma, Michael T. Pettes, David A. Strubbe   +7 more
wiley   +1 more source