The frequency-doubled output of the laser is used to record spectral line shapes of degenerate four wave mixing (DFWM) signals from the P1(15) line of the A2Σ–X2Π (0,0) band of OH in a methane/oxygen flame. Pressure broadening of the DFWM line shape is studied for the first time in a low-pressure flame and a pressure-broadening rate of 1.31 ...
Resonant degenerate four-wave mixing with two close optical frequencies (ω, ω + δ) is used to perform high-frequency optically heterodyned saturation spectroscopy.Doppler-free spectra of I 2 (λ = 514.5 nm) are obtained in this way for 20 kHz < δ < 20 MHz.Lock-in detection for δ < 1 MHz allows relaxation studies and line assignments. At higher frequencies, rf-power detection …
Degenerate four-wave mixing in a two-level absorbing (or amplifying) system is treated, leading to a quantitative description of amplified reflection, oscillation, and phase conjugation.
Degenerate four-wave-mixing (DFWM) is appealing as a potential low-SWaP squeezed light source because it is an efficient nonlinear optical process that requires only milliWatt-level …
We show that the phases of waves coupled by four-wave mixing (FWM) can be calculated in closed form, for either degenerate or nondegenerate FWM. The phase of each wave is the sum of a linear function of distance z, and elliptic …
Degenerate four-wave mixing corresponds to the case when two of the input waves have the same frequency. Thus, if ω3 = ω4, then inputting waves at ω2 and ω3 leads to the generation …
Four-wave mixing process (FWM) in the non-degenerate category can be produced by the interaction of the radiation field with the third-order nonlinear optical media.
In the explanation above, it was assumed that four different frequency components interact via four-wave mixing. This is called non-degenerate four-wave mixing. However, there is also the possibility of degenerate four-wave mixing, where two of the four frequencies coincide. For …
The physics of the degenerate four-wave mixing process for resonant transitions between two degenerate energy levels is investigated by direct numerical integration of the time-dependent density ...
Dielectric nanoantennas excited at Mie resonances are becoming suitable candidates for nonlinear optical effects due to their large intrinsic nonlinearity and capability to highly confine electromagnetic fields within …
The four-wave mixing (FWM) phenomenon has been widely explored owing to its potential applications in quantum computation 1, quantum communication 2, quantum ...
Based on degenerate four-wave mixing (FWM), the broadband Stokes waves are efficiently generated at the mid-infrared wavelength above 2 μm, for the first time to our knowledge, by coupling the femtosecond pulses into the fundamental mode of a silica photonic crystal fiber designed and fabricated in our laboratory. Influences of the power and wavelength of pump …
We present a theoretical calculation and experimental data on the effective third‐order susceptibilities χ (3) for degenerate four‐wave mixing near the band gap of semiconductors. The closeness of the calculated and experimental values for the effective χ (3) in silicon at 1.06 μm indicates the utility of our simple calculation. The large values of χ (3) …
Nearly degenerate four‐wave mixing (NDFWM) in a traveling‐wave semiconductor laser amplifier is demonstrated by simultaneously injecting two lights of slightly different frequencies in the same direction. A new frequency light at an expected frequency for NDFWM is observed with the same order of output as that of the injected light. The ...
The coherent nonlinear interaction between light and matter gives rise to intriguing nonlinear optical wave mixing phenomena (1, 2), such as high harmonic generation (HHG), sum frequency generation (SFG), and four-wave mixing (FWM).Over the past decades, nonlinear optical wave mixing has played a crucial role in laser generation and manipulation, photon …
A number of new optical effects that result from degenerate four-wave mixing in transparent optical media are proposed and analyzed. The applications are relevant to time-reversed (phase-conjugated) propagation as well as to a new mode of parametric oscillation.
Four_Wave_Mixing is a numerical simulation for Chi-3 degenerate and nondegenerate four-wave mixing (FWM) process. Currently, the nondegenerate FWM solver is still being developed. Two main files will be used in the simulation: PIA_Gain.m is the main program. The function takes inputs wl, pump, and pl.These correspond to signal wavelength, pump power, and pump …
By pumping two of these resonances, the nonlinear process of degenerate four-wave mixing is experimentally realized. By comparing the nonlinear response with that of an unpatterned silicon film, the near-field enhancement inside the nanostructured dielectric is revealed. The presented results demonstrate independent geometric control of ...
Broadband visible-near infrared and deep ultraviolet generation by four-wave mixing and high-order stimulated Raman scattering from the hybrid metasurfaces of plasmonic nanoantennae and Raman-active nanoparticles.
degenerate four-wave mixing D. S. Hamilton, D. Heiman, Jack Feinberg, and R. W. Hellwarth Electronic Sciences Laboratory, University of Southern California, Los Angeles, California 90007 Received November 21,1978 A method is introduced that measures the spatial-migration rate of electronic excitation in condensed media over
Optical nonreciprocity plays an important role in optical communication and quantum networks. In this research, we propose and demonstrate a conversion scheme of magnetic-free dual-channel optical …
DEGENERATE FOUR-WAVE MIXING 94 Phase conjugation, which has been described in section 3.1.1 is used in the reconstruction of distorted waves, by reflecting the distorted wave with a phase-conjugate mirror and passing it through the same distorting medium. This is useful in optical resonators, where the distorted beams can be corrected by ...
Degenerate four-wave mixing (DFWM) can yield phase conjugation and is useful, for example, for correcting aberrations by using a phase conjugate mirror (PCM). To understand what …
In this study we show the results for parametric non-degenerate four wave mixing (FWM) obtained using double lambda scheme at D1 line in hot potassium vapor. We have investigated the influence of one-photon detuning and two-photon detuning on the FWM gain. The laser frequency is locked at approximately 1GHz from the resonance 4S1/2 …
Degenerate four-wave mixing is used to produce two-dimensional images of OH distributions in atmospheric-pressure flames. The phase-conjugated images from single laser pulses exhibit excellent signal-to-noise ratios and illustrate that degenerate four-wave mixing has outstanding potential as a multidimensional diagnostic for combustion environments.
In this paper, we present the concept of a KITWPA operating in a non-degenerate-pump four-wave mixing (NP-4WM) regime, whereby the injection of two pump tones along with a weak signal results in a broad, flat gain profile that removes the zero-gain gap as well as eliminates the need for a DC bias and the complexities associated with it. We ...
The four-wave mixing signal is induced by two counter-propagating laser beams in a degenerate multi-level atomic system, involving the (F_g=3 rightarrow F_e =2,3), and 4 …
Here, we report the giant high odd-order optical nonlinearities in centrosymmetric correlated van der Waals insulator manganese phosphorus triselenide. When illuminated by …
3; degenerate four-wave mixing, however, is restricted to the case where ω 1 = ω 3 to generate 2ω 1 −ω 2. Previous work has studied FWM in the context of optical fibers [86–90], photonic crystal waveguides [91,92], and even matter waves [93], and has demonstrated the use of FWM in applications such as phase conjugation [65,94–96]
By pumping two of these resonances, the nonlinear process of degenerate four-wave mixing is experimentally realized. By comparing the nonlinear response with that of an …
We have analyzed the problem of degenerate four‐wave mixing in which a probe beam is incident from above onto a thin‐film waveguide pumped by two oppositely propagating guided waves. Four‐wave mixing signals are obtained both on reflection from the film surface and on transmission into the substrate supporting the film. Analytical ...
[OSA] Optical reciprocity-nonreciprocity-amplification conversion based on degenerate four-wave mixing Copy computerd Post time 15:32:18 | Show all posts | Read mode Reward 10 points
Optical oscillators with degenerate four-wave mixing (dynamic grating lasers) by S. Odoulov. 0 Want to read; 0 Currently reading; 0 Have read; Optical oscillators with degenerate four-wave mixing (dynamic grating lasers) Edit. This edition doesn't have a description yet. Can you add one? Publish Date. 1991. Publisher. Harwood Academic Publishers.
Nondegenerate forward four-wave mixing in hot atomic vapors has been shown to produce strong quantum correlations between twin beams of light [McCormick et al., Opt. Lett. 32, 178 (2007)], in a configuration which minimizes losses by absorption. In this paper, we look at the role of the phase-matching condition in the trade-off that occurs between the efficiency of …
Optical saturation and degenerate four‐wave mixing were observed in a bismuth tri‐iodide (BiI3) colloid, which has been reported to exhibit quantum confinement effects.