Results 41 to 50 of about 524,666 (307)

Beyond the Gouy-Chapman Model with Heterodyne-Detected Second Harmonic Generation. [PDF]

Journal of Physical Chemistry Letters, 2019
We report ionic strength-dependent phase shifts in second harmonic generation (SHG) signals from charged interfaces that verify a recent model in which dispersion between the fundamental and second harmonic beams modulates observed signal intensities. We
Paul E. Ohno, HanByul Chang, A. Spencer, Yangdongling Liu, Mavis D. Boamah, Hong-fei Wang, F. Geiger   +6 more
semanticscholar   +1 more source

Nonlinear plasmonics: second-harmonic generation and multiphoton photoluminescence

PhotoniX, 2023
The study on the nonlinear optical responses arising from plasmonic nanoantennas, known as nonlinear plasmonics, has been massively investigated in recent years.
Jiyong Wang, Lei Zhang, Min Qiu
doaj   +1 more source

Efficient Enhancement of Second Harmonic Generation via Noninvasive Modulation

Applied Sciences, 2022
Second harmonic generation has been widely applied in various fields. High second harmonic intensity can facilitate optical imaging, signal sensing, and detection. Thus, enhancing the intensity of the second harmonic is a significant work.
Liqing Wu, Weiru Fan, Ziyang Chen, Jixiong Pu   +3 more
doaj   +1 more source

Electric-field-induced second-harmonic generation

Opto-Electronic Advances
Second-harmonic generation (SHG) is a fundamental nonlinear optical process widely used in photonics; however, it is strictly forbidden in the bulk of centrosymmetric materials due to their inversion symmetry.
Hangkai Fan, Alexey Proskurin, Mingzhao Song, Andrey Bogdanov   +3 more
doaj   +1 more source

Giant electric field-induced second harmonic generation in polar skyrmions

Nature Communications
Electric field-induced second harmonic generation allows electrically controlling nonlinear light-matter interactions crucial for emerging integrated photonics applications.
Sixu Wang, Wei Li, Chenguang Deng, Zijian Hong, Han-Bin Gao, Xiaolong Li, Yueliang Gu, Qiang Zheng, Yongjun Wu, P. G. Evans, Jing-feng Li, C. Nan, Qian Li   +12 more
semanticscholar   +1 more source

On Hierarchical Composite Endpoints in Pediatric Cancer Supportive Care: Illustrative Examples From Two Multi‐Center Phase‐III Randomized Clinical Trials

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric supportive care clinical trials often involve multiple clinically important outcomes, complicating trial interpretation. Hierarchical composite endpoints (HCEs) provide a framework to integrate key outcomes according to clinical importance.
Willem H. Collier, Mark Zobeck, Adam J. Esbenshade, Christopher C. Dvorak, Lillian Sung, David Freyer, Sarah Alexander, Etan Orgel, Nicole J. Ullrich, Zach Prudowsky, Brian Fisher, Caitlin W. Elgarten   +11 more
wiley   +1 more source

Strong-field-assisted x-ray second harmonic generation

Physical Review Research
We theoretically demonstrate x-ray second harmonic generation (SHG) with strong-field-driven high harmonic generation (HHG) from core electrons in gas-phase atoms, highlighting its potential as a powerful spectroscopic tool for studying atomic and ...
Xinhua Xie (谢新华)
doaj   +1 more source

Optical second harmonic generation in encapsulated single-layer InSe

AIP Advances, 2018
We report the observation of optical second harmonic generation (SHG) in single-layer indium selenide (InSe). We measure a second harmonic signal of > 103 cts/s under nonresonant excitation using a home-built confocal microscope and a standard pulsed ...
Nadine Leisgang, Jonas G. Roch, Guillaume Froehlicher, Matthew Hamer, Daniel Terry, Roman Gorbachev, Richard J. Warburton   +6 more
doaj   +1 more source

Highly tunable efficient second-harmonic generation in a lithium niobate nanophotonic waveguide [PDF]

Optica, 2018
Highly-tunable coherent light generation is crucial for many important photonic applications. Second-harmonic generation (SHG) is a dominant approach for this purpose, which, however, exhibits a trade-off between the conversion efficiency and the ...
Rui Luo, Yang He, Hanxiao Liang, Mingxiao Li, Q. Lin   +4 more
semanticscholar   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source