MoS2 induced the enhancement of nonlinear absorption of Ag thin film

2020 ◽  
Vol 591 ◽  
pp. 412261
Author(s):  
Zhengwang Li ◽  
Ruijin Hong ◽  
Qingyou Liu ◽  
Jing Liao ◽  
Qianbing Cheng ◽  
...  
Keyword(s):  
Thin Film ◽  
Nonlinear Absorption

The enhancement of nonlinear absorption of Ag thin film on laser induced defective MoOx buffer layer

2020 ◽  
Vol 754 ◽  
pp. 137727
Author(s):  
Zhengwang Li ◽  
Ruijin Hong ◽  
Tingting Liu ◽  
Qi Wang ◽  
Chunxian Tao ◽  
...  
Keyword(s):  
Thin Film ◽  
Buffer Layer ◽  
Nonlinear Absorption

Cu2O induced the enhancement of nonlinear absorption of MoS2 thin film

2021 ◽  
pp. 161137
Author(s):  
Tingting Liu ◽  
Qingyou Liu ◽  
Ruijin Hong ◽  
Yuze Shi ◽  
Chunxian Tao ◽  
...  
Keyword(s):  
Thin Film ◽  
Nonlinear Absorption

scholarly journals Nonlinear absorption in CuPc-doped PMMA thin film in the femtosecond regime: Experimental and theoretical studies

2008 ◽  
Vol 16 (19) ◽  
pp. 14571 ◽  
Author(s):  
Fang Li ◽  
Peixiang Lu ◽  
Hua Long ◽  
Guang Yang ◽  
Yuhua Li ◽  
...  
Keyword(s):  
Thin Film ◽  
Nonlinear Absorption ◽  
Theoretical Studies ◽  
Femtosecond Regime ◽  
Experimental And Theoretical Studies

Nonlinear absorption coefficient of pulsed laser deposited MgZnO thin film

2015 ◽  
Author(s):  
Arpana Agrawal ◽  
Tanveer A. Dar ◽  
Ravi Solanki ◽  
D. M. Phase ◽  
Pratima Sen
Keyword(s):  
Thin Film ◽  
Absorption Coefficient ◽  
Nonlinear Absorption ◽  
Pulsed Laser ◽  
Nonlinear Absorption Coefficient

scholarly journals USING Z-SCAN TECHNIQUE TO MEASURE THE NONLINEAR OPTICAL PROPERTIES OF PMMA/ZNO NANOCOMPOSITES

2016 ◽  
Vol 78 (3) ◽  
Author(s):  
Haider Mohammed Shanshool ◽  
Muhammad Yahaya ◽  
Wan Mahmood Mat Yunus ◽  
Ibtisam Yahya Abdullah
Keyword(s):  
Thin Film ◽  
Refractive Index ◽  
Optical Properties ◽  
Absorption Coefficient ◽  
Zno Nanoparticles ◽  
Nonlinear Absorption ◽  
Nonlinear Refractive Index ◽  
Optical Switching ◽  
Nonlinear Optical ◽  
Nonlinear Absorption Coefficient

The study of nonlinear optical properties of polymer nanocomposites has been given increasing attention due its application in laser, communication and data storage technology. There is a need to enhance the understanding of all photonics technologies. In the current work, PMMA-ZnO nanocomposites as foils and as thin films have been successfully prepared. Casting method and spin coating were used to prepare them respectively. Nanocomposites were prepared by mixing ZnO nanoparticles with polymethyl methacrylate (PMMA) as the polymer matrix. Different contents of ZnO nanoparticles were used as the filler in the nanocomposites. The absorbance spectra of the samples were obtained. The linear absorption coefficient was calculated. The nonlinear refractive index and nonlinear absorption coefficient were investigated using a single beam Z-scan technique. A Q-switched Nd-YAG pulsed laser   (532 nm, 7 ns, 5 Hz) was used as a light source. Both thin film’s and foil’s samples showed peak absorption at 375 nm and increasing absorption with ZnO nanoparticles concentration. The nonlinear refractive index was in the order of 10-11 cm2/W for thin film samples and 10-12 cm2 /W for foil’s samples with a negative sign. In contrast, the nonlinear absorption coefficient is in the order of 10-6 cm/W and 10-7 cm /W for thin film and foil respectively. The figures of merit W and T were calculated in order to evaluate the suitability of the samples as optical switching device .However; they unsatisfied the requirements of optical switching devices but they can be considered as an excellent candidate for optical limiting.

Clean Electron Microscope Substrate Films Used for Micrometeorite Collection and Study

1967 ◽  
Vol 25 ◽  
pp. 366-367
Author(s):  
D. M. Davies ◽  
R. Kemner ◽  
E. F. Fullam
Keyword(s):  
Thin Film ◽  
Electron Microscope ◽  
High Altitude ◽  
Amyl Acetate ◽  
Temperature Variations ◽  
Film Forming ◽  
Film Specimen ◽  
Particulate Contaminants

All serious electron microscopists at one time or another have been concerned with the cleanliness and freedom from artifacts of thin film specimen support substrates. This is particularly important where there are relatively few particles of a sample to be found for study, as in the case of micrometeorite collections. For the deposition of such celestial garbage through the use of balloons, rockets, and aircraft, the thin film substrates must have not only all the attributes necessary for use in the electron microscope, but also be able to withstand rather wide temperature variations at high altitude, vibration and shock inherent in the collection vehicle's operation and occasionally an unscheduled violent landing.Nitrocellulose has been selected as a film forming material that meets these requirements yet lends itself to a relatively simple clean-up procedure to remove particulate contaminants. A 1% nitrocellulose solution is prepared by dissolving “Parlodion” in redistilled amyl acetate from which all moisture has been removed.

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