scholarly journals Nonlinear light absorption in many-electron systems excited by an instantaneous electric field: a non-perturbative approach

2021 ◽  
Vol 23 (16) ◽  
pp. 10059-10069
Author(s):  
Alberto Guandalini ◽  
Caterina Cocchi ◽  
Stefano Pittalis ◽  
Alice Ruini ◽  
Carlo Andrea Rozzi

The time-evolution of many-electron systems induced by an electric field in the instantaneous limit is an effective tool for investigating computationally nonlinear optical properties. It works well also for those cases in which the convergence of the perturbative expansions of the cross sections is challenging.

2012 ◽  
Vol 584 ◽  
pp. 88-91
Author(s):  
N.K. Siji Narendran ◽  
K.R. Reshma ◽  
P. Sudheesh ◽  
K. Chandrasekharan

We report the effect of electric field on third order nonlinear optical properties of Hydrazone (Hz) doped Polymethyl methacrylate (PMMA) films. The films were prepared by solution casting method. Poling of films was done by corona discharge. Single beam Z-scan technique with 7ns Nd: YAG laser pulses at 532nm were employed for the measurements. Third order susceptibility of films was measured with an emphasis on the applied electric field. We also demonstrated the second harmonic generation in the corona poled films.


2014 ◽  
Vol 453 ◽  
pp. 140-145 ◽  
Author(s):  
R.L. Restrepo ◽  
A.L. Morales ◽  
J.C. Martínez-Orozco ◽  
H.M. Baghramyan ◽  
M.G. Barseghyan ◽  
...  

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