Synthesis, Z-Scan and Degenerate Four Wave Mixing characterization of certain novel thiocoumarin derivatives for third order nonlinear optical applications

2016 ◽  
Vol 58 ◽  
pp. 171-182 ◽  
Author(s):  
K. Jayakrishnan ◽  
Antony Joseph ◽  
Paulson Mathew ◽  
T.B. Siji ◽  
K. Chandrasekharan ◽  
...  
1992 ◽  
Vol 21 (2) ◽  
pp. 281-284 ◽  
Author(s):  
Toru Sakaguchi ◽  
Yo Shimizu ◽  
Masaru Miya ◽  
Toshio Fukumi ◽  
Koji Ohta ◽  
...  

1989 ◽  
Vol 173 ◽  
Author(s):  
L. P. Yu ◽  
M. Chen ◽  
L. R. Dalton ◽  
X. F. Cao ◽  
J. P. Jiang ◽  
...  

ABSTRACTNew polymers incorporating a variety of electroactive moeities with defined π-electron conjugation lengths have been synthesized and characterized by degenerate four wave mixing (DFWM) techniques. The χ(3)/α values for these materials varied from 10−12 to 10−13 esu cm. This work has identified several promising structures with nonlinear optical activity including organometallic and purely organic materials. The preparation of composite materials has also permitted the measurement of χ(3)/α as a function of the electroactive unit concentration.


2012 ◽  
Vol 134 (2-3) ◽  
pp. 736-746 ◽  
Author(s):  
N. Sudharsana ◽  
B. Keerthana ◽  
R. Nagalakshmi ◽  
V. Krishnakumar ◽  
L. Guru Prasad

1998 ◽  
Vol 07 (04) ◽  
pp. 571-579 ◽  
Author(s):  
A. V. V. Nampoothiri ◽  
B. P. Singh ◽  
G. Ravindra Kumar

Third order nonlinear optical properties of Poly(p-phenylenevinylene) have been investigated at 532 nm using degenerate four wave mixing and Z-scan techniques. Intensity dependent absorption has been attributed to photogenerated gap states arising from one-photon π–π* transition, and the coefficient of nonlinear absorption has been estimated. The observed intensity dependence of the degenerate four wave mixing signal has been explained using four-level model involving gap state transitions.


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