Results 231 to 240 of about 275,683 (312)

All-optical control of second-harmonic generation in β-BaB₂O₄ via coherent, terahertz-driven acentric lattice displacement. [PDF]

Nat Commun
Giorgianni F, Colonna N, Nagamine G, Spitz L, Matmon G, Trisorio A, Forget N, Vicario C, Cavalieri AL.   +8 more
europepmc   +1 more source

Solid Harmonic Wavelet Bispectrum for Image Analysis

Advanced Science, EarlyView.
The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown, Mathilda Avirett‐Mackenzie, Carolin Villforth, Georgios Exarchakis   +3 more
wiley   +1 more source

Optimal designs for generalised nonlinear models with application to second harmonic generation experiments

, 2009
Woods, David C., Biedermann, Stefanie
core  

Efficient and wavelength-tunable second-harmonic generation toward the green gap. [PDF]

Sci Adv
Yuan Z, Ge J, Liu P, Li B, Li M, Liu JY, Yu Y, Chen HJ, Bowers J, Vahala K.   +9 more
europepmc   +1 more source

Perspective: Hollow Core Optical Fibres for Ultraviolet and Visible Wavelengths

Advanced Science, EarlyView.
Hollow core optical fibres bypass material constraints that limit optical fibres at ultraviolet and visible wavelengths. However, their challenging fabrication has limited their development, and significant gains in performance remain possible. In this perspective we outline approaches to enable the next generation of fibres for shorter wavelengths ...
Robbie Mears, Kerrianne Harrington, Jonathan C. Knight, William J. Wadsworth, James M. Stone, Tim A. Birks   +5 more
wiley   +1 more source

Hybrid Bismuth Halide with Rich Polymorphism and Second Harmonic Generation Response. [PDF]

ACS Mater Lett
Valueva AD, Novikov SA, Gabilondo E, Tisdale HB, Maksimova AA, Parker M, Reukov V, Klepov VV.   +7 more
europepmc   +1 more source

Pholidota‐Inspired Electronic Skin Possessing Terahertz‐Wave Reflection–Absorption–Transmission Switchability

Advanced Science, EarlyView.
The pholidota‐inspired electronic skin is successfully constructed, originally realized four‐state reversible switching of terahertz‐wave reflection, absorption, transmission, and secondary reflection. In response to external demands, it issues deformation instructions, verifies the deformation state after the equipment executes the action, and thus ...
Shangjing Li, Jiangsong Hou, Yifeng Ruan, Jiang Du, Jun Qiu   +4 more
wiley   +1 more source

Quantum-enhanced second harmonic generation beyond the photon pairs regime. [PDF]

Sci Adv
Dickinson T, Afxenti I, Astrauskaite G, Hirsch L, Nerenberg S, Jedrkiewicz O, Faccio D, Müllenbroich C, Gatti A, Clerici M, Caspani L.   +10 more
europepmc   +1 more source

Effect of Alkyl Chain Length on the Bandgap, Ferroelectric, and Photoelectric Properties of Lead‐Based Molecular Ferroelectrics

Advanced Science, EarlyView.
This study develops a novel 2D molecular ferroelectric [C6N2H18]PbI4 with polarization enhanced photovoltaics. It systematically investigates the effect of alkylamine spacer cation chain lengths on the band gap, ferroelectric, and photoelectric properties, offering new design strategies.
Ganghua Zhang, Jinrong Wen, Ping Chen, Zhibo Chen, Pingying Tang, Dezeng Li, Jingshan Hou, Yongzheng Fang   +7 more
wiley   +1 more source

High pump depletion second-harmonic generation using domain engineered thin-film lithium niobate waveguides. [PDF]

Nanophotonics
Wang C, Chen M, Tian XH, Gu Z, Tang J, Zhang Y, Wang Z, Jia K, Shi C, Gu X, Qian G, Wang Z, Zhu SN, Xie Z.   +13 more
europepmc   +1 more source