Third Order Optical Nonlinearities of C&amp;lt;sub&amp;gt;450&amp;lt;/sub&amp;gt; Doped Polymer Thin Film Investigated by the Z-Scan

Sadik, Zainab; Al-Amiedy, Dhia H.; Jaffar, Amal F.

doi:10.4236/ampc.2012.21007

Cited by 26 publications

(5 citation statements)

References 19 publications

(23 reference statements)

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“…Organic dyes possessing π -conjugated bonds in the structural backbone are good optical absorbers and exhibit strong optical nonlinearity [8]. Structural modification of dyes results in a shift of their absorption bands to a longer wavelength region and expansion of the existing photonic applications [9]. The large delocalization of π-electrons enhances the nonlinear optical properties of the dyes.…”

Section: Introductionmentioning

confidence: 99%

Third-order nonlinear optical studies of anthraquinone dyes using a CW He–Ne laser

Pramodini¹,

Poornesh

2014

Laser Phys.

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We present investigations on the third-order optical nonlinearity and optical power limiting of anthraquinone dyes. Z-scan measurements were performed using a continuous wave He-Ne laser at 633 nm wavelength as an excitation source. The nonlinear refraction studies exhibited self-defocusing behavior of the dyes. The nonlinear absorption in the dyes was dominated by a reverse saturable absorption process. Self-diffraction ring patterns were observed due to the change in refractive index and thermal lensing. Increase of the electron donating ability of the substituents resulted in enhanced values of the nonlinear optical parameters, establishing the structure-property relationship. The optical limiting study revealed that the dyes possess a lower limiting threshold and clamping level which is very important for eye and sensor protection. Hence, the dyes investigated here emerge as promising candidates for future opto-electronic and photonic device applications such as optical power limiters.

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Section: Introductionmentioning

confidence: 99%

Third-order nonlinear optical studies of anthraquinone dyes using a CW He–Ne laser

Pramodini¹,

Poornesh

2014

Laser Phys.

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“…Further, the measurements are performed at room temperature. These finding were illustrated in figure (4). From these Figures we can observed that absorption spectrum of coumarin (334) solution has a wide peak over wavelengths from 328 nm to 530 nm.…”

Section: Resultsmentioning

confidence: 53%

“…Thus, Coumarin dyes can be used to cover a large adjustable range of (420 to 580 nm). Some of the most effective laser sources employ coumarin dye [3][4][5]. These compounds are dissolved in an organic solvent and used in dye lasers.…”

Section: Introductionmentioning

confidence: 99%

Optical Properties for Thin Film of Coumarin 334 Organic Laser Dye doped with PVA Polymer and Al2O3 Nanoparticles

Saleh,

Naser

2023

JUBPAS

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Background: In this work, the optical properties for thin film of Coumarin 334 organic laser dye doped with PVA polymer and AL2O3 nanoparticles are determined at different concentrations, dissolved in ethanol solvent. Methods: Solutions at concentration (10-4 M) from coumarin (334) dye in ethanol solvent at Different concentrations from dye (1, 3, 5, and 7) ×10-5 M were prepared. Results: The AFM measurements show that the grain size, root mean square and roughness belong to the surface of the thin films rises with thickness rise for thin films . It has also increased the absorbance due to the increase in concentration. Conclusion: By using Gaussian beam from CW pulsed laser at 457 nm, we used Z-scan to study the nonlinear optical properties. The nonlinearity of thin film highly excels the pure dye solutions.

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“…The behaviour of saturation absorption relates to the formation of molecules in the excited state, which may return directly back to the ground state, Therefore, the focal point of the beam reduces, revealing a high transmittance. It is a crucial component for laser pulse compression applications [61] …”

Section: Resultsmentioning

confidence: 99%

Preparation, Crystal Structure, Physico‐chemical and Nonlinear Optical Properties of a New D‐π‐A Centrosymmetric Stilbazolium Framework of 4‐[2‐(3hydroxy‐phenyl)‐vinyl]‐1‐methyl‐pyridinium iodide (HMPI)

Nandhini,

Kalainathan

2024

ChemistrySelect

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New organic Stilbazolium cation Salt of 4‐[2‐(3 hydroxy‐phenyl)‐vinyl]‐1‐methyl‐pyridinium iodide (HMPI), which was obtained through solvent evaporation solution growth. The crystal structure was proved via the SC‐XRD technique. Its outcome reveals that the HMPI crystallised in a centrosymmetric pattern (P121/n1) and monoclinic crystal system. The compositional analysis was performed via 1H NMR and 13C NMR. The FT‐IR spectrum was used to determine the vibrational mode of the different molecular groups present in the material. The intermolecular interactions in the crystal structure were studied using Hirshfeld surface analysis. The molecular orbital energies (HOMO‐LUMO) and molecular electrostatic potential (MESP) were estimated using the Gaussian program with the density functional theory (DFT) method. The linear optical study revealed the transmittance percentage, lower cut‐off wavelength, and energy band gap for HMPI crystal. In the photoluminescence study, a green colour broad emission peak is observed at 521 nm. TG and DTA measured the thermal behaviour of grown HMPI crystal. Chemical etching and atomic force microscopy (AFM) experiments were used to report the surface properties of grown HMPI crystal. The Z‐scan technique, a He−Ne continuous wave laser at 632.8 nm used to measure the third‐order nonlinear optical susceptibility of the HMPI crystal. The Z scan approach reveals a saturable absorption and self‐defocusing nature of the title crystal.

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Third Order Optical Nonlinearities of C<sub>450</sub> Doped Polymer Thin Film Investigated by the Z-Scan

Cited by 26 publications

References 19 publications

Third-order nonlinear optical studies of anthraquinone dyes using a CW He–Ne laser

Third-order nonlinear optical studies of anthraquinone dyes using a CW He–Ne laser

Optical Properties for Thin Film of Coumarin 334 Organic Laser Dye doped with PVA Polymer and Al2O3 Nanoparticles

Preparation, Crystal Structure, Physico‐chemical and Nonlinear Optical Properties of a New D‐π‐A Centrosymmetric Stilbazolium Framework of 4‐[2‐(3hydroxy‐phenyl)‐vinyl]‐1‐methyl‐pyridinium iodide (HMPI)

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