Measurement of Kerr Coefficient in Large Bandgap Solids at Mid-IR Wavelengths

2017 ◽  
Author(s):  
S. Zahedpour ◽  
J. K. Wahlstrand ◽  
H. M. Milchberg
Keyword(s):  
Kerr Coefficient

Linear and Nonlinear Transmission of Surface Plasmon Polaritons in an Optical Nanowire

2004 ◽  
Vol 846 ◽  
Author(s):  
N. C. Panoiu ◽  
R. M. Osgood
Keyword(s):  
Surface Plasmon ◽  
Nonlinear Optical ◽  
Fdtd Method ◽  
Frequency Dispersion ◽  
Kerr Nonlinearity ◽  
Dielectric Shell ◽  
Polymer Metal ◽  
A Chain ◽  
Kerr Coefficient ◽  
20 Nm

ABSTRACTPolymer-metal composites offer the possibility of strongly enhanced nonlinear optical properties, which can be used for ultrasmall photonic devices. In this paper, we investigate numerically, by means of the finite-difference time-domain (FDTD) method, the propagation characteristics of surface plasmon polariton (SPP) modes excited in an optical nanowire consisting of a chain of either metallic cylinders or metallic spheres embedded in dielectric shells made of polymers (or other material) with optical Kerr nonlinearity. Our FDTD calculations incorporate both the nonlinear optical response of the dielectrics as well as the frequency dispersion of the metals, which is considered to obey a Drude-like model. It is demonstrated that, in the linear limit, the nanowire supports two SPP modes, a transverse and a longitudinal one, separated by Δλ = 20 nm. Furthermore, the dependence of the transmission of these SPP modes, on both the pulse peak power and Kerr coefficient of the dielectric shell, is investigated. Nonlinear optical phenomena, such as power-dependent mode frequency, switching, or optical limiting, are observed.

Determination of the Kerr Coefficient Using the Reflection Technique for Measuring the Pockels Coefficient of a Poled Polymer Film

1996 ◽  
Vol 35 (Part 2, No. 2A) ◽  
pp. L147-L149
Author(s):  
Myung-Hyun Lee ◽  
Hyung-Jong Lee ◽  
Seon Gyu Han ◽  
Hye-Young Kim ◽  
Yong Hyub Won
Keyword(s):  
Polymer Film ◽  
Poled Polymer ◽  
Kerr Coefficient

scholarly journals Electroabsorption in Metallic Nanoparticles within Transparent Dielectric Media

2020 ◽  
Vol 10 (14) ◽  
pp. 4904
Author(s):  
Mrinal Thakur ◽  
Justin Van Cleave
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Metallic Nanoparticles ◽  
Conductive Polymer ◽  
Dielectric Media ◽  
Transparent Dielectric ◽  
Electro Optic ◽  
Kerr Coefficient ◽  
Ac Fields

Electroabsorption in metallic nanoparticles within transparent dielectric media has been measured. In particular, gold nanoparticles in glass and subnanometer-size metallic domains in iodine doped nonconjugated conductive polymer have been studied. Measurements have been made for applied ac fields at 4 kHz, at a wavelength close to the onset of the surface plasmon resonance. The measured electroabsorption (imaginary part of χ(3) or Kerr coefficient) has a quadratic dependence on electric field. Its magnitudes were compared for different sizes of the metallic nanoparticles down to the subnanometer-size particles in iodine-doped nonconjugated conductive polymer. As in the case of quadratic electro-optic effect reported earlier, electroabsorption has approximately a 1/d3 dependence, d being the diameter of nanoparticle. This is consistent with existing theories on confined metallic systems.

Quadratic Electro-Optical Characterization of Molecular Nonlinear optical Materials

1987 ◽  
Vol 109 ◽  
Author(s):  
John C. Luong ◽  
N. F. Borrelli ◽  
A. R. Olszeuski
Keyword(s):  
Optical Materials ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Low Frequency ◽  
Second Order ◽  
Third Order ◽  
Kerr Coefficient ◽  
Molecular Compounds ◽  
Order Susceptibility

ABSTRACTA convenient method of measuring the nonlinear optical properties of molecular compounds is described. The method involves measuring the quadratic electro-optical coefficient of a polymer composite containing a variable concentration of the candidate NLO material. The X(3) (ω) value obtained by this low-frequency Kerr measurement, after local-field corrections, can be compared to the nonresonant third-order susceptibility measured by degenerate-four-wave-mixing technique on selective samples. We find that the choice of the polymer matrix dictates the contribution of second-order susceptibility to the Kerr coefficient. Therefore, our method can also be extended to the measurement of second-order susceptibility, analogous to the technique of field-induced second-harmonic-generation.

DC Kerr coefficient of silica: theory and experiment

1998 ◽  
Author(s):  
Alice C. Liu ◽  
Michel J. F. Digonnet ◽  
Gordon S. Kino
Keyword(s):  
Kerr Coefficient ◽  
Theory And Experiment

scholarly journals EIT enhanced self-Kerr nonlinearity in the three-level lambda system under Doppler broadening

2014 ◽  
Vol 24 (3) ◽  
pp. 217 ◽  
Author(s):  
Dinh Xuan Khoa ◽  
Le Van Doai ◽  
Pham Van Trong ◽  
Tran Manh Cuong ◽  
Vu Ngoc Sau ◽  
...  
Keyword(s):  
Matrix Theory ◽  
Nonlinear Coefficient ◽  
Kerr Nonlinearity ◽  
The Self ◽  
Doppler Broadening ◽  
Low Light ◽  
Probe Light ◽  
Kerr Coefficient ◽  
Density Matrix Theory ◽  
Good Agreement

Using density-matrix theory, an analytical expression of the self-Kerr nonlinear coefficient of a three-level lambda EIT medium for a weak probe light is derived. Influences of the coupling light and Doppler broadening on the self-Kerr coefficient are investigated and compared to experimental observation with a good agreement. The self-Kerr nonlinearity is basically modified and greatly enhanced in the spectral region corresponding to EIT transparent window. Furthermore, sign, slope, and magnitude of the self-Kerr coefficient can be controlled with frequency and intensity of the coupling light and temperature. Such controllable Kerr nonlinearity can find interesting applications in optoelectronic devices working with low-light intensity.

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