Optical limiting behavior, nonlinear optical studies, geometrical descriptors, chemical properties data, topology analysis on tetraethylammonium L-tartarate dihydrate crystals

Author(s):  
P. Vivek ◽  
M. Rekha ◽  
A. Suvitha ◽  
G. Saravana Kumar ◽  
Ro. Mu. Jauhar ◽  
...  
2010 ◽  
Vol 657 ◽  
pp. 56-61 ◽  
Author(s):  
Pramod Kumar Hegde ◽  
Airody Vasudeva Adhikari ◽  
M.G. Manjunatha ◽  
C.S. Suchand Sandeep ◽  
Philip Reji

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.


2021 ◽  
pp. 130559
Author(s):  
AA Ummu Habeeba ◽  
M. Saravanan ◽  
T.C. Sabari Girisun ◽  
S Anandan

2011 ◽  
Vol 2011 ◽  
pp. 1-12 ◽  
Author(s):  
Éimhín M. Ní Mhuircheartaigh ◽  
Silvia Giordani ◽  
Donal MacKernan ◽  
Sharon M. King ◽  
David Rickard ◽  
...  

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.


2017 ◽  
Vol 21 (04-06) ◽  
pp. 263-272 ◽  
Author(s):  
Njemuwa Nwaji ◽  
Owolabi M. Bankole ◽  
Jonathan Britton ◽  
Tebello Nyokong

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]


2014 ◽  
Vol 616-617 ◽  
pp. 189-195 ◽  
Author(s):  
C.P. Singh ◽  
Rekha Sharma ◽  
V. Shukla ◽  
P. Khundrakpam ◽  
Rajneesh Misra ◽  
...  

2017 ◽  
Vol 5 (46) ◽  
pp. 12211-12220 ◽  
Author(s):  
Partha P. Dey ◽  
Alika Khare

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


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