Third order nonlinear optical properties of potassium dichromate single crystals by Z-scan technique
TL;DR: In this paper, a single crystal of potassium dichromate (KDC) has been grown from aqueous solution by slow evaporation technique and the lattice parameters of the grown crystal were determined by X-ray diffraction analysis.
About: This article is published in Optik.The article was published on 2013-11-01. It has received 75 citations till now. The article focuses on the topics: Crystal & Single crystal.
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TL;DR: In this paper, nanocrystalline undoped and Sn doped ZnO thin films with different doping concentrations (1, 3, 5, 7 ) have been deposited on glass substrate by low cost spin coating technique.
138 citations
TL;DR: In this paper, the influence of reduction time on structural, linear and nonlinear optical properties of reduced graphene oxide (rGO) thin films synthesized by spin coating method is reported.
48 citations
TL;DR: In this paper, Semi-organic nonlinear optical (NLO) 2-amino-5-nitropyridinium bromide (2A5NPBr) single crystals have been grown by slow evaporation solution technique (SEST) with the growth period of 60 days.
Abstract: Semi-organic nonlinear optical (NLO) 2-amino-5-nitropyridinium bromide (2A5NPBr) single crystals have been grown by slow evaporation solution technique (SEST) with the growth period of 60 days. The single-crystal XRD analysis confirms the unit cell parameters of the grown crystal. The crystallinity of grown 2A5NPBr was analyzed by powder X-ray diffraction (PXRD) measurement. The presence of functional groups of 2A5NPBr crystal was confirmed by Fourier transform infrared (FTIR) spectrum analysis. The optical transmittance of the grown crystal was analyzed by UV–Vis–NIR analysis. It shows good transparency in the visible and NIR region and it is favorable for nonlinear optical (NLO) device applications. The chemical etching study was carried out and it reveals that the grown crystal has less dislocation density. The photoconductivity study reveals that the grown crystal possesses positive photoconductive nature. The thermal stability of the crystal has been investigated by thermogravimetric (TG) and differential thermal analysis (DTA). The dielectric constant and dielectric loss as a function of frequency were measured. The electronic polarizability (α) of 2A5NPBr molecule has been calculated theoretically by different ways such as Penn analysis, Clausius–Mossotti relation, Lorentz–Lorenz equation, optical bandgap, and coupled dipole method (CDM). The obtained values of electronic polarizability (α) are in good agreement with each other. Laser damage threshold (LDT) of 2A5NPBr crystal has been measured using Nd:YAG laser with the wavelength of 1064 nm. Third-order nonlinear optical property of the grown crystal was studied by Z-scan technique using He–Ne laser of wavelength 632.8 nm.
35 citations
TL;DR: In this paper, different percentages of Nickel (0, 2, 4% and 6%) doped CdS thin films have been deposited on glass substrates by the solgel spin-coating technique.
31 citations
TL;DR: In this article, a film with polyvinyl alcohol and aqueous solution of potassium dichromate is prepared where various linear optical constants and nonlinear properties are determined via the measurements of the film optical absorbance and transmittance spectra in the wavelength range 312-900nm and via the diffraction ring patterns by transmitting a visible, 473-nm, continuous wave with single fundamental transverse mode, low power laser beam.
Abstract: A film with polyvinyl alcohol and aqueous solution of potassium dichromate are prepared where various linear optical constants and nonlinear properties are determined via the measurements of the film optical absorbance and transmittance spectra in the wavelength range 312–900 nm and via the diffraction ring patterns by transmitting a visible, 473 nm, continuous wave with single fundamental transverse mode, low power laser beam. As high as 1010 sec−1 optical conductivity and nonlinear refractive index of 10−13 cm2/W of the film are obtained due to the linear parameters and 10−7 cm2/W of the aqueous solution due to the diffraction ring patterns. Fraunhofer approximations of the Fresnel-Kirchhoff theory are used to simulate the diffraction ring patterns.
25 citations
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TL;DR: In this paper, a single-beam technique for measuring both the nonlinear refractive index and nonlinear absorption coefficient for a wide variety of materials is reported, including a comprehensive theoretical analysis.
Abstract: A sensitive single-beam technique for measuring both the nonlinear refractive index and nonlinear absorption coefficient for a wide variety of materials is reported. The authors describe the experimental details and present a comprehensive theoretical analysis including cases where nonlinear refraction is accompanied by nonlinear absorption. In these experiments, the transmittance of a sample is measured through a finite aperture in the far field as the sample is moved along the propagation path (z) of a focused Gaussian beam. The sign and magnitude of the nonlinear refraction are easily deduced from such a transmittance curve (Z-scan). Employing this technique, a sensitivity of better than lambda /300 wavefront distortion is achieved in n/sub 2/ measurements of BaF/sub 2/ using picosecond frequency-doubled Nd:YAG laser pulses. >
7,717 citations
TL;DR: In this article, an experimental technique using powders is described which permits the rapid classification of materials according to the magnitude of nonlinear optical coefficients relative to a crystalline quartz standard and the existence or absence of phase matching direction(s) for second-harmonic generation.
Abstract: An experimental technique using powders is described which permits the rapid classification of materials according to(a) magnitude of nonlinear optical coefficients relative to a crystalline quartz standard and(b) existence or absence of phase matching direction(s) for second‐harmonic generation.Results are presented for a large number of inorganic and organic substances including single‐crystal data on phase‐matched second‐harmonic generation in HIO3, KNbO3, PbTiO3, LiClO4·3H2O, and CO(NH2)2. Iodic acid (HIO3) has a nonlinear coefficient d14∼1.5×d31 LiNbO3. Since it is readily grown from water solution and does not exhibit optical damage effects, this material should be useful for nonlinear device applications.
5,070 citations
TL;DR: A simple yet highly sensitive single-beam experimental technique for the determination of both the sign and magnitude of n(2), where the sample is moved along the z direction of a focused Gaussian beam while the repetitively pulsed laser energy is held fixed.
Abstract: We present a simple yet highly sensitive single-beam experimental technique for the determination of both the sign and magnitude of n2. The sample is moved along the z direction of a focused Gaussian beam while the repetitively pulsed laser energy is held fixed. The resultant plot of transmittance through an aperture in the far field yields a dispersion-shaped curve from which n2 is easily calculated. A transmittance change of 1% corresponds to a phase distortion of ≃ λ/250. We demonstrate this method on several materials using both CO2 and Nd:YAG laser pulses.
2,254 citations
TL;DR: The ability of nonlinear optical materials to transmit, process and store information forms the basis of emerging optoelectronic and photonic technologies as discussed by the authors, where organic chromophore-containing polymers, in which the refractive index can be controlled by light or an electric field, are expected to play an important role.
Abstract: The ability of nonlinear optical materials to transmit, process and store information forms the basis of emerging optoelectronic and photonic technologies. Organic chromophore-containing polymers, in which the refractive index can be controlled by light or an electric field, are expected to play an important role.
974 citations
"Third order nonlinear optical prope..." refers background in this paper
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...Third-order nonlinear optical (NLO) mateials with weak nonlinear absorption (NLA) but strong nonlinear efraction (NLR) have attracted considerable attention because of heir potential uses in the optical signal processing devices [6,7]....
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22 Oct 2013
TL;DR: In this paper, the authors present Quadratic Nonlinear Optical Effects in Crystalline Waveguiding Structures (QNOES) in polymeric media, and demonstrate the properties of these structures.
Abstract: Fundamentals: S. Mukamel, Many-Body Effects in Nonlinear Susceptibilities: Beyond the Local-Field Approximation. T. Kobayashi, Time-Resolved Nonlinear Spectroscopy of Conjugated Polymers. Nonlinear Optics in Molecular Media: Y.R. Shen, Quadratic Molecular Nonlinearities at the Air/Water Interface. J. Zyss, I. Ledoux, and J.-F. Nicoud, Advances in Molecular Engineering for Quadratic Nonlinear Optics. T. Kondo and R. Ito, Quadratic Nonlinear Optical Effects in Crystalline Waveguiding Structures. Nonlinear Optics in Polymeric Media: K.D. Singer and J.H. Andrews, Quadratic Nonlinear Optics in Poled Polymer Films: From Physics to Devices. M.G. Kuzyk and C. Poga, Quadratic Electrooptics of Guest-Host Polymers. H.S. Lackritz and J.M. Torkelson, Polymer Physics of Poled Polymers for Second Order Nonlinear Optics. V. Lemoine, J.P. Pocholle, P. Le Barny, and P. Robin, Integrated Optics with Nonlinear Polymers. S.Etemad, G.L. Baker, and Z.G. Soos, Third Order NLO Processes in Polydiacetylenes: Physics, Materials, and Devices. Chapter References. Subject Index.
683 citations