Studies on third-order nonlinear optical properties and reverse saturable absorption in polythiophene/poly (methylmethacrylate) composites

Poornesh, P.; Umesh, G.; Hegde, Pramod Kumar; Manjunatha, M. G.; Manjunatha, K.; Adhikari, Airody Vasudeva

doi:10.1007/s00340-009-3635-4

Cited by 71 publications

(56 citation statements)

References 37 publications

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“…6. It is noticed that β decreases gradually with increasing excitation intensity which is a consequence of sequential two-photon absorption via RSA [34,35] and hence these results suggest that BDDH can be utilised as good reverse saturable absorber in visible region [15]. Close aperture experimental data of BDDH for dierent excitation intensities are found to t well for typical values of n 2 (see Table).…”

Section: Resultsmentioning

confidence: 65%

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Third-Order Nonlinear Optical Properties and Reverse Saturable Absorption in 2,3-Butanedione Dihydrazone Using z-Scan Technique

Singh

Aghamkar

Lal³

2013

Acta Phys. Pol. A

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Using chemical route a 2,3-butanedione dihydrazone (BDDH) compound was prepared. The third-order nonlinear optical properties of BDDH were investigated by using single beam z-scan technique with Q-switched, frequency doubled Nd:YAG laser (λ = 532 nm) at 5 ns pulse. Eect of excitation intensity on nonlinear optical properties has been studied and found that experimental and computed values are well in agreement. Also, we found the measured nonlinear optical coecients are nearly ten times larger than the reported. The excited state absorption cross-section of BDDH was found to be larger than that of the ground state absorption cross-section, indicating the reverse saturable absorption.

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Section: Resultsmentioning

confidence: 65%

“…In addition to β, the excited-state absorption cross-section (σ exc ) of the sample can also be obtained from the normalized open aperture data by the following standard approach [15]. The change in the intensity of the laser beam, as it propagates through the sample is given by…”

Section: Open Aperturementioning

confidence: 99%

Third-Order Nonlinear Optical Properties and Reverse Saturable Absorption in 2,3-Butanedione Dihydrazone Using z-Scan Technique

Singh

Aghamkar

Lal³

2013

Acta Phys. Pol. A

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“…Poornesh et al, 16 have studied nonlinear optical parameters of two bischalcone molecules in PMMA matrix using Z-scan technique. The measurement indicated that these bischalcones exhibit negative nonlinear refractive index.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Studies on Non-Linear Optical Property of New Chalcone Based Polymers

2017

Chem Sci Trans

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Abstract:A new series of non linear optical (NLO) copolyesters have been synthesized by solution polycondensation method. The two diols namely 2,6 bis(4-methoxy-3-hydroxybenzylidene)-3-methylcyclohexanone and 1-(3-hydroxyphenyl)-3-(4-methoxy-3-hydroxyphenyl)-prop-2-en-1-one, isopthaloyl chloride and succinyl, oxalyl and glutaryl chlorides were employed in the synthesis of the six copolyesters. Claisen-Schmidt condensation reaction was employed in synthesizing these two monomer diols. The formed polymeric materials were characterized by involving viscosity measurements, solubility study and FT-IR, 1 H NMR, 13 C NMR and UV-Visible spectroscopic techniques. Thermal transitions of these six copolyesters were recorded in an inert nitrogen atmosphere using Thermogravimetric Analysis. The second harmonic generation (SHG) efficiency of these copolyesters was measured by the standard powder technique using Nd-YAG laser and they were found to be NLO active.

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“…1, were checked in polymer thin-films using poly(acrylic acid) (PAA) and poly (methyl methacrylate) (PMMA) as the polymer sources. The choice of PMMA as a polymer source is based on its long history as a polymeric support material for nonlinear absorbers [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Enhanced optical limiting behaviour of indium phthalocyanine derivatives when in solution or embedded in poly(acrylic acid) or poly(methyl methacrylate) polymers

Sanusi

Nyokong

2015

Journal of Photochemistry and Photobiology A: Chemistry

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Studies on third-order nonlinear optical properties and reverse saturable absorption in polythiophene/poly (methylmethacrylate) composites

Cited by 71 publications

References 37 publications

Third-Order Nonlinear Optical Properties and Reverse Saturable Absorption in 2,3-Butanedione Dihydrazone Using z-Scan Technique

Third-Order Nonlinear Optical Properties and Reverse Saturable Absorption in 2,3-Butanedione Dihydrazone Using z-Scan Technique

Synthesis and Studies on Non-Linear Optical Property of New Chalcone Based Polymers

Enhanced optical limiting behaviour of indium phthalocyanine derivatives when in solution or embedded in poly(acrylic acid) or poly(methyl methacrylate) polymers

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