Simultaneous Achievement of Enhanced Nonlinear Optical Absorption and Nonlinear Refraction in Highly Crystalline 2D Covalent Organic Frameworks Ultrathin Films [PDF]
Advanced ScienceLarge enhancement of nonlinear absorption and nonlinear refraction are achieved simultaneously in highly ordered two dimensional (2D) covalent organic framework (COF) films prepared by solidliquid interface one‐step method to overcome the weakness of COF
Tianyang Dong +10 more
doaj +2 more sources
Nonlinear Negative Refraction by Difference Frequency Generation [PDF]
Applied Physics Letters, 2015 Negative refraction has attracted much interest for its promising capability in imaging applications. Such an effect can be implemented by negative index meta-materials, however, which are usually accompanied by high loss and demanding fabrication ...
Cao, Jianjun +3 more
core +2 more sources
Dispersion of nondegenerate nonlinear refraction in semiconductors
Optics Express, 2016 We use our recently developed beam-deflection technique to measure the dispersion of the nondegenerate nonlinear refraction (NLR) of direct-gap semiconductors. The magnitude and sign of the NLR coefficient n2(ωa; ωb) are determined over a broad spectral range for different values of nondegeneracy.
Zhao, Peng +3 more
openaire +4 more sources
Nonlinear absorption and nonlinear refraction: maximizing the merit factors [PDF]
SPIE Proceedings, 2012 Both nonlinear absorption and nonlinear refraction are effects that are potentially useful for a plethora of applications in photonics, nanophotonics and biophotonics. Despite substantial attention given to these phenomena by researchers studying the merits of disparate systems such as organic materials, hybrid materials, metal-containing molecules and
M. Samoc +13 more
openaire +2 more sources
Hybrid Nonlinear Metasurface Refractive Lens. [PDF]
Nano LettNonlinear metasurfaces have been extensively studied, offering new capabilities to generate and control light. Usually, nonlinear metasurfaces are fabricated on planar substrates where the entire functionality is encoded in the metasurface design. Here, we study a new route to nonlinear metasurface-based optics by coating linear refractive elements ...
Karepov S, De Angelis C, Ellenbogen T.
europepmc +3 more sources
Efficient Tuning of the Third-Order Nonlinear Optical Properties of Some Functionalized Boron-Dipyrromethene Dyes [PDF]
NanomaterialsIn the present work, the third-order nonlinear optical (NLO) response of some recently synthesized, functionally substituted Boron–Dipyrromethene (BODIPY) derivatives is studied, and their nonlinear optical properties are investigated using the Z-scan ...
Ioannis Orfanos +4 more
doaj +2 more sources
Intermodal all-optical pulse switching and frequency conversion using temporal reflection and refraction in multimode fibers [PDF]
NanophotonicsIn this work, we extend temporal reflection and refraction analogies from the case of singlemode optical fibers to multimode fibers. Specifically, we show that nonlinear multimode fibers provide novel degrees of freedom that permit us to control optical ...
Sparapani Alexis C. +5 more
doaj +2 more sources
Transformation from Self-Focusing to Self-Defocusing of Silver Nanoparticles
Nanomaterials, 2021 The nonlinear refraction of silver nanoparticles (AgNPs) in n-hexane was studied by using the closed-aperture Z-scan technique with a 532 nm nanosecond laser.
Jijuan Jiang +3 more
doaj +1 more source
Optics Express, 2021 We investigate second harmonic generation (SHG) in all-dielectric resonance nanostructures of high-Q factors assisted by quasi-bound states in the continuum (quasi-BICs).
T. Ning +6 more
semanticscholar +1 more source
Nonlinear Absorption and Refraction of Picosecond and Femtosecond Pulses in HgTe Quantum Dot Films
Nanomaterials, 2021 We report measurements of the saturated intensities, saturable absorption, and nonlinear refraction in 70-nm thick films containing 4 nm HgTe quantum dots.
Arturs Bundulis +8 more
doaj +1 more source