Novel Polycarbonate Diacetylene Materials for Optical Limiting

1994 ◽  
Vol 374 ◽  
Author(s):  
Daniel J. Sandman ◽  
Jeffrey L. Conroy ◽  
Joseph Piche

AbstractIn the interest of finding useful materials systems for optical limiting, we have sought to combine the attractive third order nonlinear optical properties of polydiacetylenes (PDA) with the desirable ballistic and mechanical properties of polycarbonates in our study of two different systems. Composites of Lexan polycarbonate with the PDA from 1,6-di-N-carbazolyl-2,4-hexadiyne have attractive laser power transmission characteristics. Macromonomers derived from the chloroformates of bis -phenols A and F and diacetylene diols were synthesized, their spectral, molecular weight, and thermal properties were studied, and the crosslinking of the macromonomers to PDA structures was investigated.

2007 ◽  
Vol 88 (1) ◽  
pp. 105-110 ◽  
Author(s):  
H.J. Ravindra ◽  
A. John Kiran ◽  
K. Chandrasekharan ◽  
H.D. Shashikala ◽  
S.M. Dharmaprakash

2011 ◽  
Vol 233-235 ◽  
pp. 2468-2471 ◽  
Author(s):  
Chun Ying He ◽  
Wu Yi Qun ◽  
Zhi Min Chen ◽  
Ying Lin Song ◽  
Guang Shi ◽  
...  

The optical limiting properties of CuPcTs, NiPcTs and CoPcTs were investigated with nanosecond pulses at the wavelength of 532nm. Among them, CuPcTs exhibits the strongest optical limiting effect. An explanation based on nonlinear absorption and refraction is provided. And also, the relationship between the d-electron configuration and the third-order nonlinear optical properties of CuPcTs, NiPcTs and CoPcTs were discussed.


2008 ◽  
Vol 22 (03) ◽  
pp. 191-198 ◽  
Author(s):  
XI ZHANG ◽  
QUAN REN ◽  
WEN-FENG GUO ◽  
XIANG-BING SUN ◽  
XIN-QIANG WANG ◽  
...  

A novel dmit 2- complex: [( C 2 H 5)4 N][Co(dmit) 2], abbreviated as EtCo , was synthesized and its third-order optical nonlinearities were characterized by Z-scan technique at the wavelength of 1064 nm with laser duration of 40 ps. Z-scan curves revealed a negative nonlinear refraction at 1064 nm and a positive absorption was observed. The nonlinear refraction coefficient n2, the nonlinear absorption coefficient β and the molecular second hyperpolarizability γ have been determined to be as large as 9.51×10-19 m 2/ W , 2.19×10-12 m/W and 5.41×10-31 esu respectively, suggesting that this material has potential applications in optical limiting.


2020 ◽  
Vol 40 (12) ◽  
pp. 4140-4147 ◽  
Author(s):  
Mengfeifei Jin ◽  
Xiaojuan Liang ◽  
Huiling Zhang ◽  
Jianming Liu ◽  
Guangzhan Shao ◽  
...  

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