Z-scan studies of third-order nonlinear optical and optical limiting properties of chalcones doped Poly(methyl methacrylate) thin films for visible laser protection

2018 ◽  
Vol 84 ◽  
pp. 28-37 ◽  
Author(s):  
Shivaraj R. Maidur ◽  
Parutagouda Shankaragouda Patil
Keyword(s):  
Thin Films ◽  
Methyl Methacrylate ◽  
Nonlinear Optical ◽  
Optical Limiting ◽  
Third Order ◽  
Poly Methyl Methacrylate ◽  
Visible Laser

Third order nonlinear optical properties of phthalocyanines in the presence nanomaterials and in polymer thin films

2013 ◽  
Vol 17 (08n09) ◽  
pp. 691-702 ◽  
Author(s):  
Jonathan Britton ◽  
Mahmut Durmuş ◽  
Samson Khene ◽  
Vongani Chauke ◽  
Tebello Nyokong
Keyword(s):  
Thin Films ◽  
Quantum Dots ◽  
Optical Properties ◽  
Methyl Methacrylate ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Cdte Quantum Dots ◽  
Optical Parameters ◽  
Third Order ◽  
Poly Methyl Methacrylate

Third order nonlinear optical properties were determined for phthalocyanine complexes 1–10 containing In , Ga and Zn central metals and tetra- or octa-substituted with benzyloxyphenoxy, phenoxy, tert-butylphenoxy and amino groups at peripheral or non-peripheral positions. The phthalocyanines were embedded in poly (methyl methacrylate) polymer in the presence of CdTe quantum dots. All complexes 1–10 were studied in the presence of CdTe quantum dots and embedded in poly (methyl methacrylate) to form thin films. Complex 3 tetrasubstituted with tert-butylphenoxy groups at non-peripheral positions was also studied in the presence of CdS , CdSe quantum dots, fullerenes, single walled carbon nanotubes. Third order nonlinear optical parameters generally increase for Pcs in the presence of CdTe quantum dots.

Nonlinear optical properties of poly(methyl methacrylate) thin films doped with Bixa Orellana dye

2015 ◽  
Vol 340 ◽  
pp. 72-77 ◽  
Author(s):  
S. Zongo ◽  
A.P. Kerasidou ◽  
B.T. Sone ◽  
A. Diallo ◽  
P. Mthunzi ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Methyl Methacrylate ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Bixa Orellana ◽  
Poly Methyl Methacrylate

Nonlinear Optical Behavior of Transparent Nanohybrids of Nanocrystalline TiO2 in Poly(methyl methacrylate) Prepared by In Situ Sol-Gel Polymerization Technique

2005 ◽  
Vol 23 ◽  
pp. 367-370
Author(s):  
A.H. Yuwono ◽  
J.M. Xue ◽  
J. Wang ◽  
H.I. Elim ◽  
Wei Ji ◽  
...  
Keyword(s):  
Thin Films ◽  
Methyl Methacrylate ◽  
Nonlinear Optical ◽  
Sol Gel ◽  
Nanocrystalline Tio2 ◽  
Pump Probe ◽  
Poly Methyl Methacrylate ◽  
Ultrafast Relaxation ◽  
Quartz Substrates

Nanohybrid thin films consisting of nanocrystalline TiO2 particles in poly(methyl methacrylate)(PMMA) were successfully synthesized by in-situ sol-gel and polymerization assisted by spin coating. Using titanium isoproproxide (Ti-iP), methyl methacrylate (MMA) and 3-(trimethoxysily)propyl methacrylate (MSMA) as the starting materials, nanohybrids containing up to 60% Ti-iP in PMMA were realized. The resulting nanohybrid thin films coated on quartz substrates are optically transparent and demonstrate nonlinear optical behaviour, where their nonlinear absorption increases with the loading of Ti-iP in PMMA, as confirmed by Z-scan measurements. Using pump-probe technique, these thin films are shown to exhibit an ultrafast relaxation time of ~1.5 picosecond.

Photophysical and nonlinear optical study of benzothiazole substituted phthalocyanines in solution and thin films

2017 ◽  
Vol 21 (04-06) ◽  
pp. 263-272 ◽  
Author(s):  
Njemuwa Nwaji ◽  
Owolabi M. Bankole ◽  
Jonathan Britton ◽  
Tebello Nyokong
Keyword(s):  
Thin Films ◽  
Nonlinear Optical ◽  
Laser Excitation ◽  
Optical Limiting ◽  
Optical Study ◽  
Optical Performance ◽  
Third Order ◽  
Limiting Behavior ◽  
532 Nm ◽  
Order Susceptibility

In this study, the photophysical, nonlinear absorption and nonlinear optical limiting properties of zinc and gallium phthalocyanine complexes: tetrakis[(benzo[d]thiazol-2-yl phenoxy)phthalocyaninato]zinc(II) (3), tetrakis[(benzo[d]thiazol-2-yl phenoxy)phthalocyaninato] gallium(III) chloride (4), tetrakis[(benzo[d]thiazol-2-ylthio)phthalocyaninato] zinc(II) (5), tetrakis[(benzo[d]thiazol-2-ylthio)phthalocyaninato] gallium(III) chloride (6), were investigated both in solution and when embedded in polystyrene thin films using 532 nm laser excitation at 10 ns pulses. It was also observed that complexes that have higher triplet state absorption also possessed enhanced nonlinear and optical limiting behavior. Superior optical performance was observed when the complexes were embedded in thin films compared to when they are in solution. Complex 6 in thin films gave the highest imaginary third-order susceptibility (I[Formula: see text][X[Formula: see text]]) and hyperpolarizability ([Formula: see text] at 4.61 × 10[Formula: see text] esu and 3.44 × 10[Formula: see text] esu, respectively, with a low I[Formula: see text] value of 0.06 J.cm[Formula: see text]

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