آخرین محصولات
Theory of four-wave mixing | SpringerLink
Abstract. The present chapter is devoted to presenting the theory of four-wave mixing in semiconductor optical amplifiers (SOAs). At first, a model describing the dynamics in terms of rate equations is developed. The rate equations are derived from density matrix equations, and after coupling with the propagation equation for the field envelope ...
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Controlling four-wave mixing and six-wave mixing in a multi …
We theoretically investigate the dually dressed electromagnetically induced transparency, and the multidressed four-wave mixing (FWM) and six-wave mixing (SWM) processes in an inverted- Y -type atomic system with Zeeman sublevels. The results show that the Zeeman degeneracy of the dark states can be lifted by the dressing field as its intensity …
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Dressed Gain from the Parametrically Amplified Four-Wave Mixing …
The parametric four-wave mixing (FWM) process based on atomic coherence 1,2,3 plays important roles in the squeezed and entangled states of optical fields 4,5,6,7 as well as the high-order ...
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Multi-Wave Mixing Processes in Multi-level Atomic System
Du Y G, Zhang Y P, Zuo C C, et al. Controlling four-wave mixing and six-wave mixing in a multi-Zeeman-sublevel atomic system with electromagnetically induced transparency. …
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Chapter 3 Degenerate Four Wave Mixing
Degenerate Four Wave Mixing 3.1 Introduction 3.1.1 Theory of degenerate four-wave mixing Frequency mixing represents one of the most general but nonetheless important phenomena in nonlinear optics. In this process, two or more waves interact in a nonlinear medium to produce an output at various sum or difference frequencies.
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Theoretical and experimental investigation of broadband
Abstract: We analyze the process of cascaded four-wave mixing in a high- ... 2009 OSA 31 August 2009 / Vol. 17, No. 18 / OPTICS EXPRESS 16209 (Q) microcavities, ...
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Phys. Rev. A 79, 063839 (2009)
Abstract. We theoretically investigate the dually dressed electromagnetically induced transparency, and the multidressed four-wave mixing (FWM) and six-wave …
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Resonant four-wave mixing of laser radiation in plasmas
One method of generating a phase-conjugate signal is with four-wave mixing (FWM). In FWM three input beams interact in a nonlinear medium and a fourth beam is produced that is the phase conjugate of one of the input waves. Degenerate four-wave mixing (DFWM) is a special case of FWM in which all the beams are at the same frequency.
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Surface Wave Mixing Modifies Projections of 21st Century Ocean …
Climate models do not explicitly account for the smaller scale processes of ocean surface waves. However, many large-scale phenomena are essentially coupled with the waves. In particular, waves enhance mixing in the upper ocean and thereby accelerate the ocean response to atmospheric changes. Here, we introduced a representation of …
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Phys. Rev. Lett. 103, 266802 (2009)
Free-Space Excitation of Propagating Surface Plasmon Polaritons by Nonlinear Four-Wave Mixing Jan Renger, Romain Quidant, Niek van Hulst, Stefano Palomba, and Lukas Novotny Phys. Rev. Lett. 103, 266802 – Published 21 December 2009
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Four Wave Mixing
Four-wave mixing (FWM) involves the interaction between three input light beams with different wavelengths that are overlapping in time to produce a fourth wavelength. The …
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Ultra-high four wave mixing efficiency in slot waveguides with …
We report on wavelength conversion through four-wave-mixing in silicon slot-waveguides with embedded silicon nanocrystals. The combination of strong optical confinement and Si:nc nonlinearity provides a huge waveguide nonlinear coefficient γ = 1100 W −1 m −1.Moreover, the improvement in the fabrication procedure allowed a loss …
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Wave-turbulence interaction and its induced mixing in the …
wave‐turbulence interaction is addressed in section 2. Its induced vertical mixing and surface wave decay are dis-cussed in sections 3 and 4. The results are confirmed using a one‐dimensional turbulence closure model in section 5. Section 6 includes conclusion remarks. 2. TKE Dissipation Rate [8] Wave‐turbulence interaction in the ocean ...
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Sensors | Free Full-Text | Nonlinear Guided-Wave Mixing for …
Bolted joints are fundamental to numerous structural components in engineering practice. Nevertheless, their failure or even their loosening can lead to insufficient performance and reduced structural safety. This study presents a theoretical development and experimental investigation into nonlinear guided-wave mixing for …
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Quantum optical devices based on four-wave mixing in hot
In this paper, we briefly review the recent experimental progresses in quantum optics based on four-wave mixing (FWM) processes in hot rubidium vapor, particularly our two recent experiments in quantum information. We have experimentally produced strong quantum correlations between three bright beams generated by two cascaded FWM …
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Phys. Rev. A 79, 033814 (2009)
Abstract We present measurements of the resonance structure for nondegenerate four-wave mixing (4WM) in the diamond configuration in a warm atomic …
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Coherent and collimated blue light generated by four-wave …
3.1 Four-wave mixing and spatial characteristics We explain the CBL generation as a result of four-wave mixing in the diamond-type energy level configuration. Usually for non-degenerate four-wave mixing in atomic media three laser fields are applied to produce a new optical field [6]. In the present scheme only two laser
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Optical time lens based on four-wave mixing on a silicon chip
We propose a new technique to realize an optical time lens for ultrafast temporal processing that is based on four-wave mixing in a silicon nanowaveguide. The demonstrated time lens produces more than 100 π of phase shift, which is not readily achievable using electro-optic phase modulators. Using this method we demonstrate 20× magnification of a signal …
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Coherent and collimated blue light generated by four-wave mixing …
2009 Dec 7;17(25):22861-70. doi: 10.1364/OE.17.022861. Authors ... We present evidence that the process of four wave mixing is responsible for unidirectional blue light generation and that the phase matching conditions along a light-induced waveguide determine the direction and divergence of the blue light. Velocity-selective excitation to …
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An Experiment on the Nonbreaking Surface-Wave-Induced Vertical Mixing
Abstract Mixing induced by nonbreaking surface waves was investigated in a wave tank by measuring the thermal destratification rate of the water column. One experiment without waves and four experiments with waves of amplitudes ranging from 1.0 to 1.5 cm and wavelength from 30 to 75 cm were conducted. Water temperature …
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Phys. Rev. Lett. 103, 266802 (2009)
Here, we provide the first demonstration of free-space excitation of surface plasmons by means of nonlinear four-wave mixing. The process involves the vectorial …
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Tunable delay of Einstein–Podolsky–Rosen entanglement | Nature
Here we show that a four-wave mixing process based on a double-lambda scheme in hot 85Rb vapour allows us to obtain an optically tunable delay for EPR …
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(PDF) Nonlinear Guided-Wave Mixing for Condition
Mech. Syst. Signal Process. 2009, 23, 1805–1829. 14. ... The wave mixing technique has some unique advantages over the nonlinear ultrasonic technique based on the higher harmonic generation ...
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Controllable microwave three-wave mixing via a single three-level
Three-wave mixing in second-order nonlinear optical processes cannot occur in atomic systems due to the electric-dipole selection rules. ... Phys. Rev. Lett. 103, 150503 (2009). Article ADS Google ...
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Phys. Rev. Lett. 103, 043602 (2009)
This is, to our knowledge, the largest four-wave mixing gain observed at such low total pump powers and the first demonstrated example of four-wave mixing in an …
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Coherent and collimated blue light generated by four-wave mixing …
We present evidence that the process of four wave mixing is responsible for unidirectional blue light generation and that the phase matching conditions along a light …
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Observation of nonlinear optical phenomenon in vacuum by four waves mixing
We studied four wave mixing process in which signal is generated opposite to the direction of probe beam. We observed that large number of photons are generated in signal beam, which should be detectable. ... Babushkin et al. 2009; Renger et al. 2009; Dorman et al. 1998; Moulin and Bernard 1999; Lundin 2006; Bernard et al. 2000). Four …
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Debonding detection at adhesive joints using nonlinear Lamb waves mixing
Wave mixing method can be primarily classified as collinear [25] and non-collinear [26] depending on the wave propagation angle between the incident waves. Foreseeing its advantages, mixed-frequency response is the focus of this paper. ... (2009) J. Jingpin et al. Evaluation of the intergranular corrosion in austenitic stainless steel using ...
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Quantum correlated light beams from non- degenerate four …
©2009 Optical Society of America OCIS codes: (270.6570) Squeezed states; (230.4320) Nonlinear optical devices ... Four-wave mixing in atomic vapors is a natural choice for producing such light. In addition, proposals for using non-classical light to manipulate cold atoms have been put forth
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Applications of nonlinear four-wave mixing in optical …
One such phenomena is four-wave mixing (FWM) which has resulted in several interesting applications, perhaps the most obvious one being translating information carried by an optical wave at one wavelength to a newly created wave at some other wavelength. As these nonlinear processes in optical fiber glass are extremely fast, they …
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