Multiphoton absorption process and self-focusing effect in coumarin derivative doped PMMA films by z-scan and optical limiting studies

Sharafudeen, K. N.; Adithya, A.; Vijayakumar, S.; Sudheesh, P.; Kalluraya, Balakrishna; Chandrasekharan, K.

doi:10.1016/j.cap.2011.02.001

Cited by 40 publications

(15 citation statements)

References 30 publications

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“…Especially, organic materials with aromatic rings are considered as a potential class of nonlinear optical (NLO) materials due to their nonresonant high optical nonlinearity, fast response time and high optical damage threshold. [1][2][3] They are the key materials for numerous photonic applications like signal processing, switching, frequency generation, optical data storage, optical communication and image processing. 4,5 Also, organic materials with large third-order optical nonlinearities are widely considered for the third harmonic generation (THG) effects which is a promising mechanism for high bandwidth all-optical switching and processing devices.…”

Section: Introductionmentioning

confidence: 99%

Low power optical limiting studies on nanocrystalline benzimidazole thin films prepared by modified liquid phase growth technique

et al. 2015

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In the present work, benzimidazole (BMZ), a well known nonlinear optical material, thin films were deposited using the modified liquid phase growth technique at different solution temperatures. The prepared samples were subjected to spectral, structural and surface analyses. Linear optical properties and third-order optical nonlinearity of the deposited BMZ thin films were analysed using UV-visible-NIR spectrum and Z-scan technique, respectively. The experimental results show that the BMZ films exhibit reverse saturable absorption and positive nonlinearity at 650 nm CW laser of power 5 mW. The measured third-order nonlinear susceptibility of the films is about 10 −10 esu. Optical limiting studies were performed using the same laser source and the potentiality of the BMZ films is reported.

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Section: Introductionmentioning

confidence: 99%

Low power optical limiting studies on nanocrystalline benzimidazole thin films prepared by modified liquid phase growth technique

et al. 2015

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“…Investigation of their NLO properties is important as they can be a good candidate for electro-optic applications [33][34][35].…”

Section: Nlo Propertiesmentioning

confidence: 99%

NLOphoric Red Emitting Bis Coumarins with O-BF2-O core - Synthesis, Photophysical Properties and DFT Studies

Tathe

Sekar

2015

J Fluoresc

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The red emitting dyes were synthesized by employing coumarin core as a donor and boron-bonded coumarin as an acceptor. 7-(N,N-Diethylamino)-coumarin 3-aldehyde was reacted with 3-acetyl-4-hydroxy-coumarin, 7-(N,N-diethylamino)-3-acetyl-4-hydroxy-coumarin and 3-acetyl-4-hydroxy-1-methyl-quinolone to form the corresponding chalcones. The synthesized chalcones were though red shifted as compared to the parent coumarin, and were not emitting in red region. The BF2-complexation was used as a tool to introduce a red shift in the molecules. The BF2-complexes synthesized were found to be red emitting and show higher one photon absorption cross section. The solvatochromism shown by these dyes was studied in the light of solvent polarity parameters. DFT calculations were used to understand the photophysical properties of the synthesized dyes. NLO properties of the dyes were estimated by solvatochromic and computational methods. All the molecules synthesized were characterised with the HRMS and NMR spectral Analysis.

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“…Materials with third-order nonlinear optical (NLO) property, i.e., nonlinear refraction (NLR) and nonlinear absorption (NLA), are preferred for all optical switching and sensor protection applications [1][2][3][4][5]. For the past few years, an investigation in finding the new organic NLO materials is triggered.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear optical and laser damage threshold studies of an ammonium p-toluenesulfonate crystal

Peramaiyan

Kumar

2015

Appl. Phys. A

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An organic nonlinear optical (NLO) crystal of ammonium p-toluenesulfonate (AMPTS) was grown by a slow evaporation solution growth technique. A single crystal X-ray diffraction study revealed that the AMPTS crystal belongs to orthorhombic system with the space group of Pna2 1 . From the UV-Vis-NIR spectral study, refractive index and extinction coefficient were determined. The nonlinear refractive index, nonlinear absorption coefficient and third-order NLO susceptibility were calculated to be -5.2872 9 10 -8 cm 2 /W, 7.035 9 10 -3 cm/W and 3.44 9 10 -6 esu, respectively, by Z-scan studies. The laser damage threshold of AMPTS crystal was found to be 4.08, 4.0 and 3.95 GW/cm 2 for (10-1), (-110) and (001) planes, respectively, using a Nd:YAG laser source. Etching study revealed the surface quality of AMPTS crystal.

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Multiphoton absorption process and self-focusing effect in coumarin derivative doped PMMA films by z-scan and optical limiting studies

Cited by 40 publications

References 30 publications

Low power optical limiting studies on nanocrystalline benzimidazole thin films prepared by modified liquid phase growth technique

Low power optical limiting studies on nanocrystalline benzimidazole thin films prepared by modified liquid phase growth technique

NLOphoric Red Emitting Bis Coumarins with O-BF2-O core - Synthesis, Photophysical Properties and DFT Studies

Nonlinear optical and laser damage threshold studies of an ammonium p-toluenesulfonate crystal

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