Investigation of the third-order nonlinear optical properties in porphyrin solutions in the picosecond regime

2015 ◽  
Vol 24 (03) ◽  
pp. 1550030 ◽  
Author(s):  
M. Chniti ◽  
C. Cassagne ◽  
J. L. Godet ◽  
G. Boudebs
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Time Dependence ◽  
Nonlinear Optical ◽  
Optical Response ◽  
Spectral Width ◽  
Incident Laser ◽  
Third Order ◽  
The Third ◽  
532 Nm

The D4σ-Z-scan technique is used to evaluate the sign and the magnitude of the nonlinear (NL) refractive index and the NL absorption (NLA) coefficient with a laser delivering single pulses in the picosecond regime at 355 nm, 532 nm and 1064 nm. The NL optical response of the zinc porphyrins (Pph) has been found to be significantly enhanced. The study of the NLA and refraction is performed, taking into account the time dependence and the spectral width of the incident laser. The variations of the NL coefficients as a function of the intensity and the concentration are provided and are found to be linear.

Third-order optical nonlinearity of DSR13/THF solutions under CW He–Ne laser irradiation using Z-scan method

2021 ◽  
pp. 1-7
Author(s):  
Bassam Abbas ◽  
Mohammad Alshikh Khalil
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Nonlinear Absorption ◽  
Nonlinear Refractive Index ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Photon Absorption ◽  
Third Order ◽  
The Third ◽  
Order Susceptibility

The Z-scan technique was employed to explore the third-order nonlinear optical properties of disperse red 13 organic chromophore solutions in tetrahydrofuran. A continuous-wave He–Ne laser (632.8 nm) was used as a source of irradiation. The nonlinear absorption and nonlinear refractive index coefficients of this dye were investigated. The results showed that this dye has a good nonlinear response with its real and imaginary quantities of third-order susceptibility. The solutions showed negative nonlinear refraction. The best obtained value of the third-order susceptibility was 6.37 × 10–3 esu at a dye concentration of 3.15 × 10–4 mol/L. Moreover, the nonlinear optical properties were enhanced with higher dye concentrations, and an elevated trend in nonlinear absorption and nonlinear refractive index coefficients was observed. Also, it was found that the reverse saturable absorption was the main mechanism responsible for the two-photon absorption effect in DSR13/THF samples.

SIZE DEPENDENT SWITCHING FROM REVERSE SATURABLE TO SATURABLE ABSORPTION IN CARBOXYLATE-MODIFIED MICROSPHERES

2011 ◽  
Vol 20 (02) ◽  
pp. 137-143
Author(s):  
MANU VAISHAKH ◽  
S. MATHEW ◽  
V. P. N. NAMPOORI
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Response ◽  
Second Harmonic ◽  
Saturable Absorption ◽  
Reverse Saturable Absorption ◽  
Third Order ◽  
Size Dependent ◽  
The Third ◽  
532 Nm

The third order nonlinear optical properties of two different sized carboxylate-modified microspheres are investigated at different pump powers. The nonlinear absorption (NLA) is measured at 532 nm using 10 Hz, 7 ns pulses from the second harmonic generated from a Q-switched Nd -YAG laser in an open aperture Z-scan setup. The nonlinear response is size-dependent, and switching from reverse saturable absorption (RSA) to saturable absorption (SA) is observed as the size increases.

SYNTHESIS AND NON-RESONANT NONLINEAR OPTICAL PROPERTIES OF PUSH-PULL SIDE-CHAIN AZOBENZENE POLYMERS

2011 ◽  
Vol 20 (01) ◽  
pp. 1-13 ◽  
Author(s):  
K. FEDUS ◽  
V. SMOKAL ◽  
O. KRUPKA ◽  
G. BOUDEBS
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Absorption Coefficient ◽  
Nonlinear Optical ◽  
Side Chain ◽  
Side Group ◽  
Third Order ◽  
Active Molecule ◽  
Nonlinear Properties ◽  
The Third

In this work, we report preliminary results obtained for methacrylic polymers incorporating azobenzene side-group as nonlinear optical (NLO) active molecule. The trans-cis isomerization properties are discussed. The third-order non-resonant nonlinear refractive index (n2) and nonlinear absorption coefficient (β) are measured using the Z-scan technique at 1064 nm in the picosecond regime. The influence of different electron-acceptor groups in azobenzene moieties on the nonlinear properties is investigated.

scholarly journals Synthesis, polymerization ability, nonlinear optical properties of methacrylic monomers and polymers with benzylidene moiety

2007 ◽  
Vol 1 (3) ◽  
pp. 131-135
Author(s):  
Vitaliy Smokal ◽  
◽  
Oksana Krupka ◽  
Aleksey Kolendo ◽  
Beata Derkowska ◽  
...  
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Four Wave Mixing ◽  
Nonlinear Optical Properties ◽  
Wave Mixing ◽  
Third Order ◽  
The Third ◽  
Methacrylic Monomers ◽  
Degenerate Four Wave Mixing ◽  
532 Nm

New methacrylic monomers, their polymers with benzylidene fragment were synthesized. Structures of all compounds were determined by HNMR, UV- spectroscopies. The third order nonlinear optical properties of oxazolone, thiazolidinone and thiohydantoin containing compounds were investigated in solutions using degenerate four wave mixing (DFWM) method at 532 nm.

Physical origin of the third-order nonlinear optical properties of polyenes

2005 ◽  
Vol 52 (14) ◽  
pp. 1933-1945 ◽  
Author(s):  
I. Fuks-Janczarek ◽  
I. V. Kityk * ◽  
J. Berdowski ◽  
B. Sahraoui ◽  
C. Andraud
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Physical Origin ◽  
Third Order ◽  
The Third

Theoretical aspects on the evaluation and interpretation of the third-order nonlinear optical properties of diradical compounds

2012 ◽  
Author(s):  
Benoı̂t Champagne ◽  
Edith Botek ◽  
Akihiro Shimizu ◽  
Takashi Kubo ◽  
Kenji Kamada ◽  
...  
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Third Order ◽  
The Third

Synthesis and third-order nonlinear optical properties of novel ethynyl-linked heteropentamer composed of four porphyrins and one pyrene

2009 ◽  
Vol 13 (02) ◽  
pp. 275-282 ◽  
Author(s):  
Ning Sheng ◽  
Jing Sun ◽  
Yongzhong Bian ◽  
Jianzhuang Jiang ◽  
Dong Xu
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Three Dimensional ◽  
Spectroscopic Methods ◽  
Third Order ◽  
Zinc Compounds ◽  
Nlo Properties ◽  
Metal Free ◽  
The Third ◽  
Wide Range

Novel heteropentameric porphyrins-pyrene arrays, in which four meso-tetraphenyl porphyrins are linked to the center unit of pyrene by four acetylenyl bonds, were designed and synthesized. The newly synthesized heteropentameric compounds have been characterized by a wide range of spectroscopic methods. The third-order nonlinear optical (NLO) properties of both the metal-free and zinc compounds of the three-dimensional arrays were investigated by Z-scan experiments, showing enhanced NLO properties compared with that of the porphyrin and pyrene monomers.

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