wave mixing enhanced

Nearly degenerate four-wave mixing enhanced by the ac ...

Nearly degenerate four-wave mixing enhanced by the ac Stark effect Abstract: A model is developed to describe nondegenerate four-wave mixing in a medium characterized by a single strong atomic resonance. The nonlinear response is calculated using the density-matrix formalism, and propagation effects are included by solving coupled-wave equations.

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Imaging Gold Nanorods by Plasmon-Resonance-Enhanced …

Imaging Gold Nanorods by Plasmon-Resonance-Enhanced Four Wave Mixing Yookyung Jung,† Hongtao Chen,‡ Ling Tong,‡ and Ji-Xin Cheng‡,§,* Department of Physics, Department of Chemistry, and Weldon School of Biomedical Engineering,

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Plasmon-Enhanced Nonlinear Wave Mixing in Nanostructured ...

By varying the doping charge density in a nanoisland with a fixed geometry, enhanced wave mixing can be realized over a wide spectral range in the visible and near-infrared. We concentrate, in particular, on second- and third-order processes, including sum and difference frequency generation, as well as on four-wave mixing.

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Travelling-wave resonant four-wave mixing breaks the ...

Wave mixing inside optical resonators, while experiencing a large enhancement of the nonlinear interaction efficiency, suffers from strong bandwidth constraints, preventing its practical exploitation for processing broad-band signals. Here we show that such limits are overcome by the new concept of travelling-wave resonant four-wave mixing (FWM).

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Rational design of metallic nanocavities for resonantly ...

enhanced four-wave mixing EuclidesAlmeida & Yehiam Prior Optimizing the shape of nanostructures and nano-antennas for specific optical properties has evolved to be a very fruitful activity. With modern fabrication tools a large variety of possibilities is available

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Doubly Vibrationally Enhanced (DOVE) Four Wave Mixing ...

Doubly Vibrationally Enhanced (DOVE) Four Wave Mixing Spectroscopy . Figure 1 shows the WMEL and Mukamel diagrams for DOVE-FWM. There are three pathways that differ in the time ordering of the pulses and the resonances. There are two DOVE-IR pathways that involve excitation of two infrared transitions from the ground state followed by a normal ...

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Enhanced four-wave mixing efficiency in four-subband ...

Enhanced four-wave mixing efficiency in four-subband semiconductor quantum wells via Fano-type interference Shaopeng Liu,1 Wen-Xing Yang,1,2∗ You-Lin Chuang,2 Ai-Xi Chen,3 Ang Liu,1 Yan Huang,4 and Ray-Kuang Lee2 1Department of Physics, Southeast University, Nanjing 210096, China 2Institute of Photonics Technologies, National Tsing-Hua University, Hsinchu 300, Taiwan

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Wave Mixing Enhanced - mahamayaresidency.in

Wave Mixing Enhanced. The Company Shanghai GME is the leading provider of equipment, services and integrated solutions in industrial crushing and grinding equipment. In the last 20 years we follow the motto "Best Quality, Best Service", Shanghai Gmachine is possessed of an enviable reputation among its customers in over 50 countries spread ...

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Enhanced four-wave mixing in graphene-silicon slow-light ...

We demonstrate the enhanced four-wave mixing of monolayer graphene on slow-light silicon photonic crystal waveguides. 200-μm interaction length, a four-wave mixing conversion efficiency of -23dB is achieved in the graphene-silicon slow-light hybrid, with an enhanced 3 …

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Subharmonic resonances in higher-order collision-enhanced ...

While higher-order wave mixing is not new,5 we be-lieve that this is the first observation of collision-enhanced higher-order wave mixing. A theory of collision-enhanced higher-order wave mixing was recently presented by Agarwal and Nayak,6 who used a continued-fraction approach for …

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Rational design of metallic nanocavities for resonantly ...

The current work is a demonstration that rational design of metallic nanocavities can lead to enhanced, efficient Four Wave Mixing. When designing a strategy for optimizing the shape of nanocavities in a thin film, one may consider many different parameters as variables.

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Perturbative Theory of Higher-Order Collision-Enhanced ...

Collision-enhanced resonances represent an interesting class of nonlinear-optical processes. They occur because collisional dephasing can re-phase quantum-mechanical amplitudes that ordinarily cancel out exactly, thereby allowing otherwise unobservable wave-mixing resonances to be seen.

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OSA | Parametric wave mixing enhanced by velocity ...

We demonstrate how the orientation of the Rb cell can significantly affect the intensity and spectral characteristics of both the frequency up- and downconverted fields generated by nonlinear processes in Rb vapor. The efficiency of parametric wave mixing in Rb vapor excited to the 5D5/2 level by two-color resonant laser light can be significantly increased by seeding the excitation region ...

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Surface-Enhanced Nonlinear Four-Wave Mixing - Photonics

Surface-Enhanced Nonlinear Four-Wave Mixing Jan Renger,1 Romain Quidant,1 Niek van Hulst,1 and Lukas Novotny1,2 1ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain 2The Institute of Optics, University of …

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Plasmon-enhanced nonlinear wave mixing in nanostructured ...

Plasmon-enhanced nonlinear wave mixing in nanostructured graphene Joel D. Cox1, ∗and F. Javier García de Abajo1,2, † 1ICFO-Institut de Ciéncies Fotóniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain 2ICREA-Institució Catalana de Recerca i Estudis Avançats, Passeig Lluís Companys 23, 08010 Barcelona, Spain Localized plasmons in metallic nanostructures have ...

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Giant enhanced four-wave mixing efficiency via two-photon ...

multi-wave mixing scheme by the ultraslow propagation of a pump field based on the dual EIT, and gained the enhanced conversion efficiency. Then, Wu and coworkers [27] analysed a four-wave mixing (FWM) scheme in a double-˜ system in the ultraslow propagation regime and the maximum FWM efficiency was greater than 25%. More recently, Sun et al [25]

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Four-wave mixing - Wikipedia

Four-wave mixing (FWM) is an intermodulation phenomenon in non-linear optics, whereby interactions between two or three wavelengths produce two or one new wavelengths.It is similar to the third-order intercept point in electrical systems. Four-wave mixing can be compared to the intermodulation distortion in standard electrical systems. It is a parametric nonlinear process, in that the energy ...

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Enhanced four-wave mixing in graphene-silicon slow-light ...

Enhanced four-wave mixing in graphene-silicon slow-light photonic crystal waveguides Hao Zhou,1,2,a) Tingyi Gu,2,a) James F. McMillan,2 Nicholas Petrone,3 Arend van der Zande,3 James C. Hone,3 Mingbin Yu,4 Guoqiang Lo,4 Dim-Lee Kwong,4 Guoying Feng,1 Shouhuan Zhou,1,5 and Chee Wei Wong2,a) 1College of Electronic Information, Sichuan University, Chengdu 610064, China

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Surface-Enhanced Nonlinear Four-Wave Mixing

Surface-Enhanced Nonlinear Four-Wave Mixing Jan Renger,1 Romain Quidant,1 Niek van Hulst,1 and Lukas Novotny1,2 1ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain 2The Institute of Optics, University of …

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Enhanced or suppressed six-wave mixing in a five-level ...

Enhanced or suppressed six-wave mixing in a ... In a multi-level system, the generated multi-wave mixing can be selectively enhanced or suppressed and the wave can be emitted with a small absorption under the electromagnetically induced transparency (EIT)

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Enhanced four-wave mixing in hybrid integrated waveguides ...

Here, we experimentally demonstrate enhanced four-wave mixing (FWM) in hybrid integrated waveguides coated with GO films. Owing to strong mode overlap between the integrated waveguides and the high Kerr nonlinearity GO films as well as low linear and nonlinear loss, we demonstrate significant enhancement in the FWM efficiency.

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Phase Conjugation By Resonantly Enhanced Degenerate Four ...

The use of resonantly enhanced four-wave mixing to generate high reflectivity phase-conjugate waves is discussed. A physical understanding of the mechanisms underlying the nonlinear response for a simple two-level system is presented followed by a discussion of the complicating effects of pump absorption, pump depletion, unbalanced pumps, and thermal motion.

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Enhanced four-wave mixing with nonlinear plasmonic ...

Enhanced four-wave mixing with nonlinear plasmonic metasurfaces Boyuan Jin & Christos Argyropoulos Plasmonic metasurfaces provide an effective way to increase the efficiency of several nonlinear processes while maintaining nanoscale dimensions. In this work, nonlinear metasurfaces based on

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Enhanced continuous-wave four-wave mixing using Hybrid ...

Hassan Mousa Mohamed et al Enhanced continuous-wave four-wave mixing using Hybrid Modulation Technique 1378| International Journal of Current Engineering and Technology, Vol.6, No.4 (Aug 2016) is examined in single channel link whereas SRS, XPM

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Brillouin Dynamic Gratings – A Practical Form of ...

Brillouin-Enhanced Four-Wave-Mixing techniques, which couple four optical beams through Brillouin nonlinearity, have gained popularity in the 1980's largely owing to their phase conjugation properties. Experiments were mainly conducted in liquid cells. The interest in Brillouin-Enhanced Four-Wave-Mixing has reawakened in the 2000's, following the quest for dynamically reconfigurable gratings ...

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Brillouin-enhanced four-wave-mixing vector phase …

360 OPTICS LETTERS / Vol. 22, No. 6 / March 15, 1997 Brillouin-enhanced four-wave-mixing vector phase-conjugate mirror with beam-combining capability Mark W. Bowers Institute of Optics, University of Rochester, Rochester, New York 14627, and

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Invited Article: Enhanced four-wave mixing in waveguides ...

We demonstrate enhanced four-wave mixing (FWM) in doped silica waveguides integrated with graphene oxide (GO) layers. Owing to strong mode overlap between the integrated waveguides and GO films that have a high Kerr nonlinearity and low loss, the FWM efficiency of the hybrid integrated waveguides is significantly improved. We perform FWM measurements for different pump powers, …

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Resonantly enhanced four-wave mixing (Patent) | DOepatents

A method and apparatus for achieving large susceptibilities and long interaction lengths in the generation of new wavelengths in the infrared spectral region. A process of resonantly enhanced four-wave mixing is employed, utilizing existing laser sources, such as the CO.sub.2 laser, to irradiate a ...

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Enhanced Four-Wave Mixing in Doubly Resonant Si ...

A four-wave-mixing efficiency of -49 dB was demonstrated for cw pump and probe signals in the milliwatt range, while for pulsed pumps with a peak power of 25 mW the conversion efficiency increased ...

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Conical emission due to four-wave mixing enhanced by the ...

of the atomic levels, the four-wave mixing process shown on the right side of Fig. 1 is resonantly enhanced at each of its intermediate levels. A detailed semiclassical calculation that predicts large gain for this four-wave mixing process has been presented by Boyd et al.8 The generation of intense radiation in the forward direction

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Cavity-enhanced optical controlling based on three-wave ...

Cavity-enhanced optical controlling is experimentally observed with a low-control laser power in a cavity-atom ensemble system. Here, the three-level atoms are coupled with two optical modes of a Fabry-Perot cavity, where a new theoretical model is developed to describe the effective three-wave mixing process between spin-wave and optical modes.

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Quantum Noise and Correlations in Resonantly Enhanced …

Quantum Noise and Correlations in Resonantly Enhanced Wave Mixing Based on Atomic Coherence M.D. Lukin,1 A.B. Matsko, 2,3M. Fleischhauer,2,4 and M.O. Scully 1ITAMP, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138 2Department of Physics, Texas A&M University, College Station, Texas 77843-4242

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Quantum Entanglement of Fock States with Perfectly ...

wave mixing (FWM), however, has not been reported [11]. Here, we discuss a scheme to achieve quantum entanglement of two Fock states with perfectly efficient, ultraslow propagation enhanced FWM. An atomic me-dium is illuminated with a two-mode continuous-wave (cw) control laser to coherently mix two excited states.

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