Ultrafast Nonlinear Optical Characteristics of Pyrene-Conjugated Azaphthalocyanines with Optical Limiting Behavior

2020 ◽  
Vol 124 (39) ◽  
pp. 21740-21750
Author(s):  
Mathew Sebastian ◽  
Asaithampi Ganesan ◽  
Haider Behbehani ◽  
Ali Husain ◽  
Saad Makhseed
Keyword(s):  
Nonlinear Optical ◽  
Optical Limiting ◽  
Optical Characteristics ◽  
Limiting Behavior

scholarly journals Molecular Engineering of Nonplanar Porphyrin and Carbon Nanotube Assemblies: A Linear and Nonlinear Spectroscopic and Modeling Study

2011 ◽  
Vol 2011 ◽  
pp. 1-12 ◽  
Author(s):  
Éimhín M. Ní Mhuircheartaigh ◽  
Silvia Giordani ◽  
Donal MacKernan ◽  
Sharon M. King ◽  
David Rickard ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Molecular Conformation ◽  
Noncovalent Interactions ◽  
Optical Limiting ◽  
Convincing Evidence ◽  
Molecular Engineering ◽  
Photoluminescence Quenching ◽  
Limiting Behavior ◽  
Nanotube Composites ◽  
Linear And Nonlinear

The importance of molecular conformation to the nature and strength of noncovalent interactions existing between a series of increasingly nonplanar tetraphenylporphyrin (TPP) derivatives and carbon nanotubes was systematically investigated experimentally in solution using a range of linear and nonlinear optical techniques. Additional complementary molecular dynamics studies were found to support the experimental observations. Convincing evidence of binding between single walled nanotubes (SWNTs) and some of these porphyrins was discovered, and a nonplanar macrocycle conformation was found to increase the likelihood of noncovalent binding onto nanotubes. Nonlinear optical studies showed that the optical limiting behavior of the TPP derivatives deteriorated with increasing porphyrin nonplanarity, but that formation of nanotube composites dramatically improved the optical limiting properties of all molecules studied. It was also found that the significant photoluminescence quenching behavior reported in the literature for such porphyrin/SWNT composites is at least partly caused by photoluminescence and excitation self-absorption and is, therefore, an artifact of the system.

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]

Nonlinear optical and optical limiting response of PLD nc-Si thin films

2017 ◽  
Vol 5 (46) ◽  
pp. 12211-12220 ◽  
Author(s):  
Partha P. Dey ◽  
Alika Khare
Keyword(s):  
Thin Films ◽  
Deposition Temperature ◽  
Nonlinear Optical ◽  
Optical Limiting ◽  
Temperature Dependent ◽  
Limiting Behavior ◽  
Si Films

PLD nc-Si films exhibited deposition temperature-dependent large RSA and positive NLR (χ(3) ∼ 10−1 esu) and optical limiting behavior.

Nonlinear Optical Studies on a New Poly{2-(biphenyl-4-yl)-5-[3,4-didecyloxy-5-(1,3,4-oxadiazol-2-yl)thiophen-2-yl]-1,3,4-oxadiazole}

2010 ◽  
Vol 657 ◽  
pp. 56-61 ◽  
Author(s):  
Pramod Kumar Hegde ◽  
Airody Vasudeva Adhikari ◽  
M.G. Manjunatha ◽  
C.S. Suchand Sandeep ◽  
Philip Reji
Keyword(s):  
Nonlinear Optical ◽  
Optical Limiting ◽  
Photon Absorption ◽  
Excitation Wavelength ◽  
Optical Studies ◽  
Limiting Behavior ◽  
Single Beam ◽  
Transmission Measurements ◽  
Best Fit ◽  
532 Nm

Measurements of nonlinear optical properties of a newly synthesized thiophene based polymer are reported. The nonlinear transmission measurements were performed on the polymer dissolved in N,N-dimethylformamide by employing the single beam Z-scan technique using a Q-switched laser output at 532-nm. The polymer shows strong optical limiting behavior, where the transmittance decreases when the pump fluence is increased. It was found that an effective three-photon absorption (3PA) model at the excitation wavelength gives the best fit to the obtained experimental data. The value of the 3PA coefficient has been numerically calculated. This study clearly reveals the potential of new polymeric material has, for optical limiting applications.

Third-order nonlinear optical properties and optical limiting behavior of 1,1-ferrocenedicarbaldehyde

2013 ◽  
Vol 576 ◽  
pp. 35-38 ◽  
Author(s):  
Cheng-Bao Yao ◽  
Yun-Dong Zhang ◽  
Hai-Tao Yin ◽  
Qing-Yu Meng ◽  
Chang-Qiu Yu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Optical Limiting ◽  
Nonlinear Optical Properties ◽  
Third Order ◽  
Limiting Behavior
Sign in / Sign up

Export Citation Format

Share Document