Degenerate nonlinear absorption and optical power limiting properties of asymmetrically substituted stilbenoid chromophoresElectronic supplementary information (ESI) available: Experimental details. See http://www.rsc.org/suppdata/jm/b3/b313185h/

Poly (3 - Hexylthiophene - Co - Thiophene) copolymer was prepared by using the addition polymerization method. The Nonlinear optical properties and the behavior of the optical power limiting of the prepared polymer blend poly (3HT- Co - Th) - PMMA films were studied by using the z - scan technique for different weight ratios of the copolymer poly (3HT- Co - Th). In the present work, a continuous wave (CW) diode - pumped solid - state laser (DPSSL) of wavelengths 532 nm was used for the irradiation of the prepared film samples. The nonlinear optical parameters such as, the nonlinear refractive index (n2), the nonlinear absorption coefficient (β), and the third - order - nonlinear optical susceptibility (χ (3)) of the polymer blend poly (3HT- Co - Th) - PMMA films were determined for different weight ratios of the copolymer poly (3HT- Co - Th). It is observed that the polymer blend poly (3HT - Co - Th) - PMMA films exhibit saturable absorption (SA) and self - defocusing effects, and this gives an indication that both, the nonlinear refractive index (n2) and the nonlinear absorption coefficient (β), have negative values. The obtained results indicate that the prepared polymer blend poly (3HT - Co - Th) - PMMA films are promising materials and can be considered as suitable materials for different optical and electronic applications.

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Errata: Optical power limiting and nonlinear absorption effects of polymer functionalized carbon nanotube thin films

Optical Engineering ◽

10.1117/1.3511298 ◽

2010 ◽

Vol 49 (10) ◽

pp. 109801

Author(s):

Liangmin Zhang

Keyword(s):

Thin Films ◽

Carbon Nanotube ◽

Nonlinear Absorption ◽

Optical Power ◽

Functionalized Carbon Nanotube ◽

Optical Power Limiting

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ALL-OPTICAL POWER LIMITING

Journal of Nonlinear Optical Physics & Materials ◽

10.1142/s0218863500000224 ◽

2000 ◽

Vol 09 (03) ◽

pp. 343-364 ◽

Cited By ~ 10

Author(s):

M. POTASEK ◽

S. KIM ◽

D. MCLAUGHLIN

Keyword(s):

Saturable Absorber ◽

Cross Sections ◽

Nonlinear Absorption ◽

Numerical Technique ◽

Beam Propagation Method ◽

Optical Power ◽

Kerr Nonlinearity ◽

Decay Rates ◽

Optical Power Limiting ◽

Reverse Saturable Absorber

We derived a numerical technique for the propagation of the electromagnetic field in a five-level reverse saturable absorber including the nonlinear Kerr effect and dispersion. The numerical method combines the split step beam propagation method and the Crank–Nicholson method. Using our numerical technique we observed new behavior, not previously observed nor predicted to our knowledge, including the temporal splitting caused by the dynamics of the carrier densities in a reverse saturable absorber and the enhancement of absorption due to the Kerr nonlinearity. Our numerical calculation enables the prediction of nonlinear absorption using material parameters such as the absorption cross-sections and decay rates. We can also investigate the interplay between the optical pulse properties such as the temporal pulse width, spatial radius, incident energy and the carrier dynamics and nonlinear absorption of the reverse saturable absorber.

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