CW Optical Limiting Study in Disperse Yellow Dye-doped PMMA-MA Polymer Films

Aithal, Shubrajyotsna; Aithal, P. S.; Bhat, G.

doi:10.21013/jas.v5.n3.p4

Cited by 6 publications

(3 citation statements)

References 28 publications

(28 reference statements)

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“…58, No.4A, pp: 1839-1848 1842 nonlinearity cans either (saturable absorption SA): the absorption coefficient decreases and the transmittance increase with increase in the input laser intensity, and (reverse saturable absorption RSA): the absorption coefficient increases and the transmittance decrease [19]. The normalized change in transmitted intensity can be calculated by the equations (6)(7)(8), [15, 19, and 20]:…”

Section: (2) [14]mentioning

confidence: 99%

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Nonlinear optical characteristics of Nile blue films doped with the polymers PMMA, PVC and their blend by using z-scan technique

2017

ijs

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The nonlinear optical characteristics of the laser dye Nile blue doped with Polyvinyl chloride (Nb /PVC), poly methylmethacrylate Nb/ (PMMA) and their blend N /(blend of PMMA 50 %+PVC 50%) was studded. Free-casting technique method was used for deposited the films. The nonlinear properties of the films studded by using Z-scan technique .Z-scan experiment was performed using continuous wave (CW) diode laser at 650 nm in two parts with power of 50 mw. The first part was done using a closed-aperture placed in front of the detector to measure the nonlinear refractive index ,with the second part; the aperture in front the detector was removed (open aperture) to measure the nonlinear absorption coefficient. The open-aperture curve exhibits a normalized transmittance (valley), indicating the presence of induced absorption. The observed nonlinearity is found to be of the third order, as it fits to two photon absorption process (TPA). The closedaperture curve exhibits a peak to valley shape, indicating a negative value of the nonlinear refractive index n 2. The effective values of the nonlinear refractive index n 2 , the nonlinear absorption coefficient β 2 , real and imaginary parts of the third-order optical nonlinearity, χ(3) for Nb/PMMA+PVC films comparatively with that of Nb/PMMA and Nb/PVC has much lower optical transmittance value obtained shows that these films can be used as efficient optical limiters.

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Section: (2) [14]mentioning

confidence: 99%

“…(2010 [4]). Oxazine Dye Doped Films in PMMA,Amal jaffar(2015 [5]) .Disperse Yellow Dye-doped PMMA-MA Polymer Shubrajyotsna et al ( 2016 [6]). Orange G Dye in Solution and Polymer Film,Furat A. Al-Saymari et al (2016 [7])…”

Section: Introductionmentioning

confidence: 99%

Nonlinear optical characteristics of Nile blue films doped with the polymers PMMA, PVC and their blend by using z-scan technique

2017

ijs

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“…Other materials with optical limiting properties are glasses doped with different nanoparticles [ 35 , 36 ]. Measurements of OL response in synthetic polymers (Ethylene propylene-diene monomer (EPDM), Poly(methyl methacrylate) (PMMA)) doped with dye (Disperse Red 1, Disperse Yellow, respectively) are also reported using 532 nm wavelength (10 ns pulses and continuous wave) [ 37 , 38 ]. However, DNA-based biopolymers, which have been intensively studied recently, present several advantages over materials based on synthetic polymers.…”

Section: Introductionmentioning

confidence: 99%

Optical Limiting Properties of DNA Biopolymer Doped with Natural Dyes

Gheorghe,

Petris,

Anton

2023

Polymers

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The high-power lasers have important implications for present and future light-based technologies; therefore, the protection measures against their high-intensity radiation are extremely important. Currently, a great deal of interest is directed towards the development of new nonlinear optical materials for passive optical limiters, which are used to protect the human eye and sensitive optical and optoelectronic devices from laser-induced damage. Biopolymers doped with natural dyes are emerging as a new class of optical materials with interesting photosensitive properties. In this paper, the optical limiting capability of deoxyribonucleic acid bio-polymer functionalized with Turmeric natural dye has been demonstrated for the first time, to the best of our knowledge. The experimental investigation of the optical limit has been done by the Intensity-scan method in the NIR spectral domain at the important telecommunication wavelength of 1550 nm, using ultrashort laser pulses (~120 fs). Several optical properties of this natural dye are presented and discussed. The values of the optical transmittance in the linear regime, the saturation intensity of the nonlinear transmittance curves, and the coefficient of the nonlinear absorption have been determined. The influence of the DNA biopolymer and natural dye concentration on the optical limiting properties of the investigated biomaterials is reported and discussed. The photostability and thermal stability of the investigated solutions have also been evaluated by monitoring the temporal decay of the normalized absorption spectra under illumination with UVA light and heating, respectively. Our results evidence the positive influence of the DNA, which embeds Turmeric natural dye, on the optical limiting functionality itself and on the photostability and thermal stability of this novel material. The performed study reveals the potential of the investigated novel biomaterial for applications in nonlinear photonics, in particular in optical limiting.

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