Intense low threshold nonlinear absorption and nonlinear refraction in a new organic–polymer nanocomposite

2011 ◽  
Vol 129 (3) ◽  
pp. 981-989 ◽  
Author(s):  
P.G. Louie Frobel ◽  
S.R. Suresh ◽  
S. Mayadevi ◽  
S. Sreeja ◽  
Chandrachur Mukherjee ◽  
...  
Keyword(s):  
Nonlinear Absorption ◽  
Nonlinear Refraction ◽  
Polymer Nanocomposite ◽  
Organic Polymer ◽  
Low Threshold

I-scan measurements of the nonlinear refraction and nonlinear absorption coefficients of some nanomaterials

2003 ◽  
Author(s):  
Qiguang Yang ◽  
JaeTae Seo ◽  
Santiel J. Creekmore ◽  
Doyle A. Temple ◽  
K. P. Yoo ◽  
...  
Keyword(s):  
Nonlinear Absorption ◽  
Nonlinear Refraction ◽  
Absorption Coefficients

scholarly journals Nonlinear absorption and nonlinear refraction: maximizing the merit factors

2012 ◽  
Author(s):  
M. Samoc ◽  
K. Matczyszyn ◽  
M. Nyk ◽  
J. Olesiak-Banska ◽  
D. Wawrzynczyk ◽  
...  
Keyword(s):  
Nonlinear Absorption ◽  
Nonlinear Refraction

scholarly journals Interaction of Pulses of Different Duration with Chemically Prepared Silver Nanoparticles: Analysis of Optical Nonlinearities

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Ke Zhang ◽  
Rashid A. Ganeev ◽  
Konda Srinivasa Rao ◽  
Sandeep Kumar Maurya ◽  
Ganjaboy S. Boltaev ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Nonlinear Absorption ◽  
Nonlinear Optical ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Nonlinear Refraction ◽  
Optical Nonlinearities ◽  
Chemical Reduction Method ◽  
Ag Nps ◽  
Picosecond Pulses

The nonlinear optical properties of the aqueous solutions of silver nanoparticles (Ag NPs) prepared by chemical reduction method are analyzed using femtosecond and picosecond pulses at different wavelengths. In the case of 800 and 400 nm, the growths of nonlinear absorption and nonlinear refraction with the increase of Ag NP concentration, as well as a change at the signs of nonlinear optical processes, are determined. The nonlinear absorption coefficient and nonlinear refractive index of Ag NP solutions measured using picosecond pulses were a few orders of magnitude larger than those in the case of femtosecond probe pulses. We also demonstrate the optical limiting properties of Ag NPs using 800 nm, 60 fs pulses.

Peaks separation of the nonlinear refraction and nonlinear absorption induced by external electric field

2006 ◽  
Vol 88 (11) ◽  
pp. 111911 ◽  
Author(s):  
Dongyi Guan ◽  
Zhenghao Chen ◽  
Yueliang Zhou ◽  
Kui-Juan Jin ◽  
Guozhen Yang
Keyword(s):  
Electric Field ◽  
External Electric Field ◽  
Nonlinear Absorption ◽  
Nonlinear Refraction

Self-assembled High-Q WGM Microbottle Resonator using Organic Polymer for Low Threshold Microlasing

2016 ◽  
Author(s):  
Aneesh V. Veluthandath ◽  
Shubhayan Bhattacharya ◽  
Shahab Bakhtiari Gorajoobi ◽  
Prem B. Bisht ◽  
Ganapathy Senthil Murugan
Keyword(s):  
Organic Polymer ◽  
High Q ◽  
Low Threshold ◽  
Self Assembled

Nonlinear Absorption and Nonlinear Refraction of Self-Assembled Porphyrins

2006 ◽  
Vol 110 (31) ◽  
pp. 15140-15145 ◽  
Author(s):  
Zhi-Bo Liu ◽  
Yi-Zhou Zhu ◽  
Yan Zhu ◽  
Shu-Qi Chen ◽  
Jian-Yu Zheng ◽  
...  
Keyword(s):  
Nonlinear Absorption ◽  
Nonlinear Refraction ◽  
Self Assembled

SYNTHESIS, CHARACTERIZATION AND SINGLE-BEAM Z-SCAN MEASUREMENT OF THE THIRD-ORDER OPTICAL NONLINEARITIES OF ZnO NANO-PARTICLES

2008 ◽  
Vol 22 (18n19) ◽  
pp. 3165-3171 ◽  
Author(s):  
M. H. MAJLES ARA ◽  
Z. DEHGHANI ◽  
S. SAIEVAR IRANIZAD
Keyword(s):  
Absorption Coefficient ◽  
Nonlinear Absorption ◽  
Nonlinear Refraction ◽  
Average Particle Size ◽  
Nonlinear Absorption Coefficient ◽  
Nano Particles ◽  
Average Particle ◽  
Optical Nonlinearities ◽  
Nano Particle ◽  
Uv Visible

Nano-particle materials with large optical nonlinearities are in great need for the development of nonlinear optical technology and are being studied intensively in recent years. ZnO nanoparticles have been synthesized by precipitation from zinc acetate in a series of n-alkanols from ethanol to 1-hexanol as a function of temperature. The formation and microstructure of ZnO particles were monitored by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-Vis spectrum and z-scan technique. We studied the optical limiting effect of ZnO nano-particles. Using a CW He - Ne laser at 632.8 nm. The UV-Visible spectrum of this material shows a 373.5 nm peak. Using the UV-Visible, the band gap of this nano-particle is obtained about 3.31 eV. Also the XRD spectroscopy indicates that the structure is wurtzite hexagonal. Average particle size obtained from SEM analysis about 43nm. Furthermore the nonlinear refractive index, n 2, and nonlinear absorption coefficient, β, were measured using close and open aperture z-scan respectively, at peak laser irradiation of 1.743 kW/cm2. Then the nonlinear refraction index of this nano-particle was measured in order of 10-7 (cm2/W) with negative sign and the nonlinear absorption coefficient was obtained in order of 10-3 (cm/W).

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