Nonlinear optical and optical limiting properties of phthalocyanines in solution and thin films of PMMA at 633 nm studied using a cw laser

Mathews, SJ; Kumar, Samir; Giribabu, Lingamallu; Rao, S. Venugopal

doi:10.1016/j.matlet.2007.02.034

Cited by 163 publications

(52 citation statements)

References 26 publications

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“…This high level of doping in the organic solids is due to the excellent compatibility between the chromophore and PMMA. This is to be compared to other studies regarding nonlinear absorbents in thin films that mainly use concentrations of 1 wt% or less, [39][40][41][42] and often still suffer from aggregation of filler content and decreased optical transparency.…”

Section: Preparation Of Solid-state Limitersmentioning

confidence: 99%

“…[39][40][41][42][43] In this article we investigate the incorporation of three efficient nonlinear absorbing platinum(II) acetylides into highly transparent organic glasses based on poly(methyl methacrylate) (PMMA), and how the OPL properties are affected by the solid matrix. Furthermore, we report the synthesis of a methacrylate endgroupfunctionalized platinum(II) acetylide that can copolymerize together with methyl methacrylate (MMA), and simultaneously act as a crosslinking agent.…”

Section: Introductionmentioning

confidence: 99%

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Efficient Nonlinear Absorbing Platinum(II) Acetylide Chromophores in Solid PMMA Matrices

Westlund

Malmström

Lopes

et al. 2008

Adv Funct Materials

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Platinum(II) acetylides were incorporated into poly(methyl methacrylate) (PMMA) glasses to obtain solid‐state nonlinear optical devices. We report on device fabrication, structural, chemical, and mechanical properties, as well as the optical limiting capabilities of the final solids. Two different guest‐host systems are presented: 1) Dye molecules functionalized to be readily dispersed in methyl methacrylate (MMA) and subsequent in situ polymerization of the MMA yielding solid PMMA host matrices. 2) Dye molecules functionalized to copolymerize with MMA forming covalent bonds between the guest and the PMMA host matrix. A range of doped organic solids were prepared, reaching concentrations up to 13 wt% of the guest molecule. Raman spectra of the doped solid devices indicate that the chemical structure of the nonlinear dyes remains intact upon the polymerization of the solid matrix. Luminescence spectra confirm that the basic photophysical properties observed for the same solute molecules in THF are maintained also in the solid state. Optical power limiting (OPL) characterization reveal clamping levels for the dyes nonbonded to the solid host being less than 4 µJ at pulse energies up to 110 µJ at 532 nm (f/5 arrangement and 5 ns pulses), which is comparable to the performance of similar dyes in THF solutions. In contrast, the highly crosslinked solid possesses a higher clamping level (8 µJ) at the same nominal concentration.

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Section: Preparation Of Solid-state Limitersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Efficient Nonlinear Absorbing Platinum(II) Acetylide Chromophores in Solid PMMA Matrices

Westlund

Malmström

Lopes

et al. 2008

Adv Funct Materials

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“…[16] The absolute value of the third-order nonlinear optical susceptibility is given by the relation:…”

Section: Resultsmentioning

confidence: 99%

Nonlinear Characterization of Rhodamine 610 dye-doped PMMA Thin Films Under 650 nm CW Laser Light Excitation

Jaffar¹

2017

JNUS

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In this work the nonlinear optical properties for Rodamine 610 (R610) in PMMA doped films with different concentrations with the solvent Chloroform by using a high sensitive method known as Z-Scan technique were studied.Z-scan experiment was performed using CW diode laser at 650 nm with the power output of 45 mW, in two parts. The first part was done using a closed-aperture placed in front of the detector to measure the nonlinear refractive index. In the second part; the aperture in front the detector was removed (open aperture) to measure the nonlinear absorption coefficient. The experimental results for closed aperture show that the dye doped films exhibit negative refractive index (self_defocusing) for the films of concentration 10 -5 and 10 -4 M, while the film of concentration 10 -6 M exhibits positive refractive index (self-focusing), The results show also that the nonlinear refractive index and the third order nonlinear susceptibility increased with the increasing of the concentration due to the increasing of the film thickness which caused increasing the nonlinear phase shift in the samples. With open aperture z-scan the samples exhibit two photon absorption under the experimental conditions. The effective values of the nonlinear refractive index n2, the nonlinear absorption coefficient β, real and imaginary parts of the third-order optical nonlinearity, χ (3) were evaluated. The results imply that R610 films can be used as a potential medium for various optoelectronic applications including that in optical power limiting.

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“…If we collect all the energy transmitted by the sample (open aperture Z-scan), the measurement is sensitive to nonlinear absorption only. If an aperture is placed in front of the detector (closed aperture Z-scan), the measurement is sensitive to both nonlinear absorption and nonlinear refraction [10][11][12][13][14][15].…”

Section: Resultsmentioning

confidence: 99%

Single beam Z-scan measurement of the third order optical nonlinearities of styryl7 dye

Kumaresan¹,

Ahamed

2014

Optik

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Nonlinear optical and optical limiting properties of phthalocyanines in solution and thin films of PMMA at 633 nm studied using a cw laser

Cited by 163 publications

References 26 publications

Efficient Nonlinear Absorbing Platinum(II) Acetylide Chromophores in Solid PMMA Matrices

Efficient Nonlinear Absorbing Platinum(II) Acetylide Chromophores in Solid PMMA Matrices

Nonlinear Characterization of Rhodamine 610 dye-doped PMMA Thin Films Under 650 nm CW Laser Light Excitation

Single beam Z-scan measurement of the third order optical nonlinearities of styryl7 dye

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