scholarly journals Nonlinear Optical Switching in Regioregular Porphyrin Covalent Organic Frameworks

2019 ◽  
Vol 131 (21) ◽  
pp. 6970-6974 ◽  
Author(s):  
Bishnu P. Biswal ◽  
Sreeramulu Valligatla ◽  
Mingchao Wang ◽  
Tanmay Banerjee ◽  
Nabil A. Saad ◽  
...  
Keyword(s):  
Optical Switching ◽  
Nonlinear Optical ◽  
Covalent Organic Frameworks

scholarly journals Nonlinear Optical Switching in Regioregular Porphyrin Covalent Organic Frameworks

2019 ◽  
Vol 58 (21) ◽  
pp. 6896-6900 ◽  
Author(s):  
Bishnu P. Biswal ◽  
Sreeramulu Valligatla ◽  
Mingchao Wang ◽  
Tanmay Banerjee ◽  
Nabil A. Saad ◽  
...  
Keyword(s):  
Optical Switching ◽  
Nonlinear Optical ◽  
Covalent Organic Frameworks

Nonressonant nonlinear optical switching behavior of Ag monometallic and Ag@Au bimetallic investigated by femtosecond Z-Scan measurements

2021 ◽  
Vol 142 ◽  
pp. 107247
Author(s):  
Sara D.G. Mariano ◽  
Naythalla A.M. Saraiva ◽  
Jean C.S. Costa ◽  
Claudevan A. Sousa ◽  
Nefe J.B. Silva ◽  
...  
Keyword(s):  
Optical Switching ◽  
Nonlinear Optical ◽  
Switching Behavior

scholarly journals Fused ring effect on optical nonlinearity and structure property relationship of anthracenyl chalcone based push-pull chromophores

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0257808
Author(s):  
Dian Alwani Zainuri ◽  
Mundzir Abdullah ◽  
Muhamad Fikri Zaini ◽  
Hazri Bakhtiar ◽  
Suhana Arshad ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Electrostatic Potential ◽  
Nonlinear Refractive Index ◽  
Optical Switching ◽  
Nonlinear Optical ◽  
Continuous Wave ◽  
Excited State Absorption ◽  
Nonlinear Optical Properties ◽  
Closed Aperture

The Ultraviolet-visible (UV-Vis) spectra indicate that anthracenyl chalcones (ACs) have high maximum wavelengths and good transparency windows for optical applications and are suitable for optoelectronic applications owing to their HOMO–LUMO energy gaps (2.93 and 2.76 eV). Different donor substituents on the AC affect their dipole moments and nonlinear optical (NLO) responses. The positive, negative, and neutral electrostatic potential regions of the molecules were identified using molecular electrostatic potential (MEP). The stability of the molecule on account of hyperconjugative interactions and accompanying charge delocalization was analyzed using natural bond orbital (NBO) analysis. Open and closed aperture Z-scans were performed using a continuous-wave frequency-doubled diode-pumped solid-state (DPSS) laser to measure the nonlinear absorption and nonlinear refractive index coefficients, respectively. The valley-to-peak profile of AC indicated a negative nonlinear refractive index coefficient. The obtained single crystals possess reverse saturation absorption due to excited-state absorption. The structural and nonlinear optical properties of the molecules have been discussed, along with the role of anthracene substitution for enhancing the nonlinear optical properties. The calculated third-order susceptibility value was 1.10 x10-4 esu at an intensity of 4.1 kW/cm2, higher than the reported values for related chalcone derivatives. The NLO response for both ACs offers excellent potential in optical switching and limiting applications.

INVESTIGATION OF THIRD-ORDER NONLINEAR OPTICAL PROPERTIES OF BFDT-DOPED PMMA THIN FILMS USING Z-SCAN TECHNIQUE

2009 ◽  
Vol 23 (28) ◽  
pp. 3361-3368
Author(s):  
HELIANG FAN ◽  
XINQIANG WANG ◽  
QUAN REN ◽  
TINGBIN LI ◽  
JING SUN ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Optical Switching ◽  
Nonlinear Optical ◽  
Doping Concentration ◽  
Quartz Substrate ◽  
Nonlinear Coefficient ◽  
Nonlinear Optical Properties ◽  
Potential Candidate ◽  
Third Order

A series of polymeric thin films with BFDT (BFDT = 4,5-bis(foroylsulfanyl)-1,3-dithiole-2-thione) doped in PMMA (polymethylmethacrylate) were fabricated by means of spin-coating on quartz substrate. The third-order nonlinear optical properties of the films were investigated by Z-scan technique at 532 nm wavelength with 20 ps pulse width. The influences of doping concentration for third-order nonlinearity were also studied. A self-defocusing effect was observed from the Z-scan curves and the nonlinear refractive index of the film increases with the increase in doping concentration. Our results suggest that considerable nonlinear optical properties were found in BFDT. In addition, it was found that the nonlinear coefficient of the BFDT-doped PMMA thin film was about two orders of magnitude larger than that of homologous materials with organic solvents. By analysis, we can conclude that the material is a potential candidate for applications of nonlinear optics and can be considered in the fabrication of all-optical switching devices, etc.

Above room-temperature dielectric and nonlinear optical switching materials based on [(CH3)3S]2[MBr4] (M = Cd, Mn and Zn)

2019 ◽  
Vol 48 (30) ◽  
pp. 11292-11297 ◽  
Author(s):  
Xiao-Gang Chen ◽  
Yao-Zu Zhang ◽  
Dong-Sheng Sun ◽  
Ji-Xing Gao ◽  
Xiu-Ni Hua ◽  
...  
Keyword(s):  
Optical Switching ◽  
Nonlinear Optical ◽  
Room Temperature ◽  
Inorganic Hybrid ◽  
Hybrid Compounds ◽  
Switching Characteristics

Three organic–inorganic hybrid compounds based on [Me3S]+ cations exhibit sensitive dielectric and nonlinear optical switching characteristics above room temperature.

ZnSe-BODIPY hybrid system for nonlinear optical switching applications

2019 ◽  
Vol 232 ◽  
pp. 311-318 ◽  
Author(s):  
M.C. Divyasree ◽  
E. Shiju ◽  
Prasannan Dijo ◽  
K. Chandrasekharan
Keyword(s):  
Hybrid System ◽  
Optical Switching ◽  
Nonlinear Optical
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