Measurement of nonlinear optical coefficients by the z-scan technique: Correctness of the technique and investigation of a new compound-lutetium diphthalocyanine complex

Autor:	Aleksandr A Manenkov, Ya. V. Kravchenko, Victor E. Pushkarev, Larisa G. Tomilova, A. V. Troitskii
Rok vydání:	2012
Předmět:	Diffraction Materials science business.industry Physics::Optics General Physics and Astronomy chemistry.chemical_element Pulse duration Laser Lutetium law.invention Nonlinear system Optics chemistry law Nonlinear medium Z-scan technique business Refractive index
Zdroj:	Physics of Wave Phenomena. 20:137-142
ISSN:	1934-807X 1541-308X
DOI:	10.3103/s1541308x12020082
Popis:	Correctness of z-scan measurements of nonlinear refractive indices for optical media is considered. It is shown that accuracy of these measurements is greatly affected by the thickness of the nonlinear medium layer (as compared with the diffraction length of the laser beam). Nonlinear refractive indices of nitrobenzene are measured at different laser pulse durations (7 ns and 350 ps); the nonlinearity mechanism is discussed. It is shown that at the pulse duration 350 ps the orientation mechanism of nonlinearity is less effective than at the pulse duration 7 ns due to its time lag. Nonlinear refractive indices are measured for the solution of a new synthesized compound-hexadecabutyl-substituted lutetium diphthalocyanine.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::45f0fb4bd2a1fe1840d52f285f216732 https://doi.org/10.3103/s1541308x12020082 Zobrazit plný text záznamu Full text from SpringerLink