The nonlinear refraction and absorption dependence on the thermal effect for 4 ns pulse duration in binuclear Zn(II) phthalocyanine solution

The influence of thermal effect on the third-order nonlinear optical properties of binuclear Zn(II) phthalocyanine in chloroform solution was studied. The nonlinear refraction and absorption of the sample was measured by using Z-scan technique with 4 ns laser pulses at 532 nm wavelength. The opposit...

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Veröffentlicht in:Optics communications 2008-07, Vol.281 (14), p.3897-3901
Hauptverfasser: Yüksek, Mustafa, Ceyhan, Tanju, Bağcı, Fulya, Gül Yağlıoğlu, H., Elmali, Ayhan, Bekaroğlu, Özer
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container_end_page 3901
container_issue 14
container_start_page 3897
container_title Optics communications
container_volume 281
creator Yüksek, Mustafa
Ceyhan, Tanju
Bağcı, Fulya
Gül Yağlıoğlu, H.
Elmali, Ayhan
Bekaroğlu, Özer
description The influence of thermal effect on the third-order nonlinear optical properties of binuclear Zn(II) phthalocyanine in chloroform solution was studied. The nonlinear refraction and absorption of the sample was measured by using Z-scan technique with 4 ns laser pulses at 532 nm wavelength. The opposite signs of the effective nonlinear refraction index were observed by changing the focal length of focusing lens from 10 cm to 20 cm in the experimental setup. Changing the focusing lens increased the beam waist radius from 7 μm to 20 μm. The nonlinear absorption coefficient was reduced about 200 times based on changing the fluence or beam waist radius. The drastic changes in the third-order nonlinear optical parameters were attributed to thermal effect. To investigate the role of thermal effects even further the effective nonlinear refraction and absorption coefficients were studied by using different repetition rates, input powers and concentrations.
doi_str_mv 10.1016/j.optcom.2008.03.034
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source Elsevier ScienceDirect Journals Complete
subjects Beam trapping, self-focusing and defocusing
self-phase modulation
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Nonlinear absorption
Nonlinear optics
Optical materials
Optical susceptibility, hyperpolarizability
Optics
Physics
Polymers and organics
Self-defocusing
Self-focusing
Thermal effect
Z-Scan
title The nonlinear refraction and absorption dependence on the thermal effect for 4 ns pulse duration in binuclear Zn(II) phthalocyanine solution
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