Spectral, third-order nonlinear optical and optical switching behavior of β-carotenoid extracted from phyllanthus niruri

2021 ◽  
Author(s):  
S. Jeyaram
Keyword(s):  
Optical Switching ◽  
Nonlinear Optical ◽  
Switching Behavior ◽  
Third Order ◽  
Phyllanthus Niruri

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

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.

scholarly journals Above Room Temperature Reversible Phase Transition Induces Distinct Dielectric and Nonlinear Optical Switching Response Behavior in Crown-Ether-Based Supramolecular Clathrate

Crystals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 184 ◽  
Author(s):  
Jing Jing ◽  
Fan Jiang ◽  
Yan-Li Wei ◽  
Chao Shi ◽  
Heng-Yun Ye ◽  
...  
Keyword(s):  
Phase Transition ◽  
Crown Ether ◽  
Optical Switching ◽  
Nonlinear Optical ◽  
Thermal Hysteresis ◽  
Switching Behavior ◽  
Stimuli Responsive ◽  
Scanning Calorimetry ◽  
Reversible Phase Transition ◽  
Reversible Phase

Stimuli-responsive materials with coexisting nonlinear optical (NLO) and dielectric properties are technologically important, which enable simultaneous conversion of optoelectronic properties between different states under external stimuli. By rationally screening guest cations (C6H5NF2)+ in the crown-ether inclusion system, we synthesized a crown-ether supramolecular compound [(C6H5NF2)(18-crown-6)][PF6] (1). Differential scanning calorimetry (DSC) showed that 1 undergoes a reversible phase transition above room temperatures (305 K/292 K), with a thermal hysteresis of 13 K. Temperature-dependent dielectric and NLO measurements show that the compound exhibits two distinct switching response behaviors. Structural analysis indicates that the order–disorder change of the host molecule 18-crown-6 and the guest organic cation during the phase transition induces the dielectric and NLO switching behavior of the compound.

scholarly journals Third-Order Nonlinear Optical Properties and Ultrafast Optical Switching of Chalcogenide Glasses

1997 ◽  
Vol 105 (1228) ◽  
pp. 1115-1119 ◽  
Author(s):  
Kazuyuki HIRAO ◽  
Hirohisa KANBARA ◽  
Seiji FUJIWARA ◽  
Koichiro TANAKA ◽  
Naoki SUGIMOTO
Keyword(s):  
Optical Properties ◽  
Chalcogenide Glasses ◽  
Optical Switching ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Third Order ◽  
Ultrafast Optical

scholarly journals Second-order nonlinear optical switching with a record-high contrast for a photochromic and thermochromic bistable crystal

2017 ◽  
Vol 8 (11) ◽  
pp. 7751-7757 ◽  
Author(s):  
Xiu-Shuang Xing ◽  
Rong-Jian Sa ◽  
Pei-Xin Li ◽  
Ning-Ning Zhang ◽  
Zhong-Yuan Zhou ◽  
...  
Keyword(s):  
Optical Switching ◽  
Nonlinear Optical ◽  
Second Order ◽  
Switching Behavior ◽  
High Contrast ◽  
Crystalline Compound

The first bistable NLO crystalline compound with both photo- and heat-induced SHG-switching behavior shows a record-high photoinduced SHG-switching contrast.

Ultrafast third order nonlinear optical properties of water soluble zinc-octacarboxy-phthalocyanine

2012 ◽  
Vol 16 (09) ◽  
pp. 1015-1023 ◽  
Author(s):  
M. Bala Murali Krishna ◽  
L. Giribabu ◽  
D. Narayana Rao
Keyword(s):  
Optical Switching ◽  
Nonlinear Optical ◽  
Water Soluble ◽  
Photon Absorption ◽  
Saturable Absorption ◽  
Reverse Saturable Absorption ◽  
Third Order ◽  
Two Photon Absorption ◽  
Time Domains ◽  
Soluble Zinc

Synthesis and measurements of third order nonlinear optical (NLO) coefficients of water soluble zinc octacarboxy phthalocyanine (ZnOCPc) are reported here using different laser pulse durations. Nonlinear absorption and refraction behaviour in the nanosecond (ns), picosecond (ps) and femtosecond (fs) time domains were studied in detail. Three-photon absorption was the prevalent mechanism with femtosecond laser excitation whereas strong reverse saturable absorption due to dominant two-photon absorption (TPA) was observed with picosecond and nanosecond excitations. We have evaluated the sign and magnitude of the third order nonlinearity in fs, ps, and ns regimes. We observed large off-resonant second order hyperpolarizability (γ) with ultrafast nonlinear optical response in the femtosecond domain using degenerate four wave mixing (DFWM) technique. We also report the optical limiting characteristics and figure of merit (FOM) of ZnOCPc for optical switching.

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