Open AccessInvestigation of third order nonlinearity of Ethidium bromide doped deoxyribonucleic acid) DNA)
Author(s) -
R. K. Fakher Alfahed,
Hussain A. Badran,
Abu Talib Y. Abbas,
Noor Al-Huda Saleh
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1963/1/012136
Subject(s) - ethidium bromide , z scan technique , attenuation coefficient , wavelength , absorption (acoustics) , materials science , refractive index , optics , dna , doping , nonlinear optics , chemistry , optoelectronics , physics , laser , biochemistry
The concentrations-dependent refractive index n 2 and the nonlinear absorption coefficient β of Ethidium bromide dye-doped deoxyribonucleic acid (biological polymer DNA) solutions in the SDL regime at 532 nm are reported. The Z-scan technique was performed in two ways and two different wavelengths, 532nm and 473nm, the open aperture technique and the closed aperture technique. From open aperture Z-scan measurements it is found that the Ethidium bromide doped deoxyribonucleic acid films exhibited reverse saturable absorption. The coefficient of nonlinear refraction and nonlinear absorption coefficient at 473nm wavelength is greater than at 532nm.