Results 111 to 120 of about 9,289,923 (301)
Silica microfibres for broadband third harmonic generation
We report broadband third harmonic generation via intermodal phase matching in silica microfibres of several centimetres. A 5 dB conversion bandwidth exceeding 36 nm was recorded, with harmonic power detected over a 150 nm ...
Ding, M. +5 more
core +1 more source
Arbitrary orbital angular momentum addition in second harmonic generation
New Journal of Physics, 2014 We demonstrate second harmonic generation performed with optical vortices with different topological charges imprinted on orthogonal polarizations. Besides the intuitive charge doubling, we implement arbitrary topological charge addition on the second ...
W T Buono +4 more
doaj +1 more source
Advanced Functional Materials, EarlyView.A hybrid additive manufacturing platform integrates direct droplet writing of metallic composite with VAT photopolymerization to fabricate architected soft magnetic composites. This approach enables microscale patterning of high‐viscosity materials for programmable actuators, adaptive fluidic devices, and switchable adhesives, offering tunable ...
Yeowon Yoon +4 more
wiley +1 more source
Metasurface-assisted phase-matching-free second harmonic generation in lithium niobate waveguides
Nature Communications, 2017 Phase matching is a crucial condition for nonlinear optical processes. Here, Wang et al. demonstrate that a gradient metasurface composed of phased array antennas allows phase-matching-free frequency conversion over a pump wavelength range of almost 100 ...
Cheng Wang +7 more
doaj +1 more source
Advanced Functional Materials, EarlyView.An integrated pulmonary mRNA delivery platform combining novel biodegradable syringic acid‐derived ionizable lipids, design‐of‐experiments formulation optimization, and vibrating‐mesh nebulizer engineering enabled stable aerosolization and efficient lung delivery.
Neha Kaushal +21 more
wiley +1 more source
Resonance assisted second-harmonic generation in a quasi-phase-matched structure
, 1996 Second-harmonic generation is analyzed for the case of a quasi-phase-matched structure containing a saturable absorber. Its presence suppresses the parametric instability limiting efficiency of the second-harmonic generation and preserves the high ...
Mel'nikov, I.V., I.V Mel'nikov
core +1 more source
Angular-polarization-engineered interferometric second-harmonic generation microscopy
PhotoniXConventional second-harmonic generation (SHG) microscopy fundamentally lacks the phase sensitivity, which is essential for characterizing symmetry properties that depend on phase information.
Xuan Zhao +5 more
doaj +1 more source
Advanced Functional Materials, EarlyView.A lead‐free tin‐based hybrid perovskite is designed in which stereochemically active lone‐pair electrons on tin distort the crystal lattice and break its symmetry. Blended into a flexible polymer, the material converts pressure into electricity at milliwatt‐scale power density and continues working far below freezing, powering a commercial wristwatch ...
Majid Haji Bagheri +12 more
wiley +1 more source
"Push-no-pull" porphyrins for second harmonic generation imaging
, 2013 The established approach to design a molecule with strong second-order nonlinear optical (NLO) activity is to connect an electron-donor to an electron-acceptor via a π-conjugated bridge, to generate push-pull system. Surprisingly, we have found that dyes
Reeve, James E. +7 more
core +1 more source
THz Electric Field-Induced Second Harmonic Generation in Inorganic Ferroelectric
Scientific Reports, 2017 Second Harmonic Generation induced by the electric field of a strong nearly single-cycle terahertz pulse with the peak amplitude of 300 kV/cm is studied in a classical inorganic ferroelectric thin film of (Ba0.8Sr0.2)TiO3.
Kirill A. Grishunin +8 more
doaj +1 more source