Studies on thermally induced third-order optical nonlinearity and optical power limiting response of Azure B under CW He–Ne laser excitation

2014 ◽  
Vol 62 ◽  
pp. 58-62 ◽  
Author(s):  
S. Pramodini ◽  
Deepika ◽  
Sandhya ◽  
Ashok Rao ◽  
P. Poornesh
2015 ◽  
Vol 24 (01) ◽  
pp. 1550008 ◽  
Author(s):  
Liangmin Zhang ◽  
Benjamin Steckling ◽  
Adrian Lucero ◽  
Andreas Schmitt-Sody ◽  
William White ◽  
...  

We have used single-stranded DNA (ssDNA) and polyvinylpyrrolidone (PVP) to disperse multiwalled carbon nanotubes (MWNTs) in water solution through sonication and centrifuge procedures. The advantage of these two polymers is that they do not need toxic organic solvents to distribute the carbon nanotubes. The scanning electron microscope (SEM) technique has been used to investigate the interaction between polymer molecules and MWNTs. The images show that MWNTs can be distributed effectively into the two polymer solutions. The third-order optical susceptibility, nonlinear optical absorption coefficient and optical power limiting of these dispersions have been characterized experimentally using a femtosecond laser system with a tunable range of 750–850 nm. The imaginary part of the third-order optical susceptibility has also been computed.


1996 ◽  
Author(s):  
Oleg B. Mavritsky ◽  
Andrey N. Egorov ◽  
Anatolius N. Petrovsky ◽  
Konstantin V. Yakubovsky ◽  
Werner J. Blau ◽  
...  

2014 ◽  
Vol 56 ◽  
pp. 425-429 ◽  
Author(s):  
Laxminarayana Kamath ◽  
K.B. Manjunatha ◽  
Seetharam Shettigar ◽  
G. Umesh ◽  
B. Narayana ◽  
...  

2001 ◽  
Vol 708 ◽  
Author(s):  
B. Sahraoui ◽  
K.J. Pluciński ◽  
I. V. Kityk ◽  
B. Paci ◽  
P. Baldeck ◽  
...  

ABSTRACTMeasurements of the third-order susceptibilities of new dithienylethylenes in solutions using a degenerate four wave mixing technique at λ=532 nm in picosecond regime were made. From these measurements we deduced the second order hyperpolarizabilities. Optical power limiting properties of the mentioned compounds using nanosecond laser pulses in the visible range are evaluated. The dispersion of nonlinear absorption coefficients is obtained. The appropriate quantum chemical calculations are carried out.


RSC Advances ◽  
2016 ◽  
Vol 6 (94) ◽  
pp. 91083-91092 ◽  
Author(s):  
M. Saravanan ◽  
T. C. Sabari Girisun ◽  
G. Vinitha ◽  
S. Venugopal Rao

Nanohybrids consisting of uniform nanospheres and nanospindles of zinc ferrite attached to reduced graphene oxide were prepared by hydrothermal reaction.


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