scholarly journals Cobalt Enhanced Nonlinear Optical Properties and Optical Limiting of Zinc Oxide Irradiated by Femtosecond Laser Pulses

2020 ◽  
Author(s):  
Tarek Hassan ◽  
Abdalla Shehata ◽  
Wael Z. Tawfik
Keyword(s):  
Zinc Oxide ◽  
Optical Properties ◽  
Femtosecond Laser ◽  
Nonlinear Optical ◽  
Laser Pulses ◽  
Optical Limiting ◽  
Femtosecond Laser Pulses ◽  
Nonlinear Optical Properties

Shell-thickness-dependent nonlinear optical properties of colloidal gold nanoshells

2014 ◽  
Vol 2 (35) ◽  
pp. 7239-7246 ◽  
Author(s):  
Marta Gordel ◽  
Joanna Olesiak-Banska ◽  
Radoslaw Kolkowski ◽  
Katarzyna Matczyszyn ◽  
Malcolm Buckle ◽  
...  
Keyword(s):  
Optical Properties ◽  
Femtosecond Laser ◽  
Shell Thickness ◽  
Nonlinear Optical ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Nonlinear Optical Properties ◽  
Gold Nanoshells ◽  
Third Order ◽  
Different Thickness

Third-order nonlinear optical properties of gold nanoshells of different thickness were investigated over a broad wavelength range (530–1200 nm) by the Z-scan technique using femtosecond laser pulses.

Nonlinear Optical Properties of Biosilicate Nanocomposite Materials

2013 ◽  
Vol 677 ◽  
pp. 3-8 ◽  
Author(s):  
Dmitriy Proschenko ◽  
Sergey Golik ◽  
Alexey Chekhlenok ◽  
Irina Postnova ◽  
Yuri Shchipunov ◽  
...  
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Spectral Characteristics ◽  
Ultrashort Pulses ◽  
Laser Pulses ◽  
Optical Nonlinearity ◽  
Nanocomposite Materials ◽  
Femtosecond Laser Pulses ◽  
Nonlinear Optical Properties ◽  
Cds Nanoparticles

The transmission of the femtosecond laser pulses by new biosilicate nanocomposite materials has been experimentally investigated. The strong nonlinear optical properties of these nanocomposite structures have been revealed in spectral characteristics of transmitted ultrashort pulses. The shape of transmitted spectrums through new nanocomposite biomaterials demonstrates major changes indicating the broadening with formation a strong anti Stokes component in the output spectrum with generation of supercontinuum spectra. The carried out studies have showed that the optical nonlinearity of new nanocomposite materials can be regulated by trace amounts of Au or CdS nanoparticles.

Preparation of Two Carbazole Derivatives and its Third-Order Nonlinear Optical Properties

2010 ◽  
Vol 663-665 ◽  
pp. 231-234 ◽  
Author(s):  
Liang Li ◽  
Yi Qun Wu ◽  
Chun Ying He ◽  
Wu Biao Duan
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Nonlinear Optical Properties ◽  
Third Order ◽  
Carbazole Derivative ◽  
Single Beam ◽  
Carbazole Derivatives ◽  
Type D

Carbazole derivative is one sort of important nonlinear optical materials. In this work, new symmetric-type D-π-D carbazole derivatives, 3, 6 - di- substituted carbazole chromophores with two styryl bridges of the two-dimensional conjugated D-π-D system were synthesized via Witting reaction and characterized by IR, NMR and MS. The third-order nonlinear optical properties of the material were investigated using single-beam Z-scan technique with Sapphire femtosecond laser pulses at 800nm, repetition rate of 1 KHz and pulse width of 140fs. The results of Z-scan with and without an aperture showed that larger third-order nonlinear optical polarizabilities γ can be readily obtained in such carbazole chromophores because of the incorporation with two styryl bridges, increasing of conformational planarity and molecular conjugation length.

Nonlinear optical properties of colloidal carbon nanoparticles: nanodiamonds and carbon dots

RSC Advances ◽  
2014 ◽  
Vol 4 (76) ◽  
pp. 40152-40160 ◽  
Author(s):  
Irene Papagiannouli ◽  
Athanasios B. Bourlinos ◽  
Aristides Bakandritsos ◽  
Stelios Couris
Keyword(s):  
Optical Properties ◽  
Carbon Dots ◽  
Carbon Nanoparticles ◽  
Nonlinear Optical ◽  
Laser Excitation ◽  
Optical Limiting ◽  
Nonlinear Optical Properties ◽  
Nlo Response ◽  
Colloidal Carbon ◽  
532 Nm

Nanodiamonds (NDs) and carbon-dots (CDs) suspensions exhibit significant NLO response under both ps and ns laser excitation. NDs exhibit important optical limiting action under nanosecond visible (532 nm) and infrared (1064 nm) laser excitation.

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