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Third-order nonlinearities and optical limiting properties of rose Bengal at 532 nm wavelength | ||
| Journal of Basrah Researches (Sciences) | ||
| Article 1, Volume 33, Issue 2, 2007, Pages 76-82 PDF (0 K) | ||
| Author | ||
| Q. M. A. Hassan | ||
| Abstract | ||
| The nonlinear refractive index n2 and nonlinear absorption coefficient for aqueous solution of rose Bengal were obtained using closed aperture and open aperture Z-scan technique at the same wavelength. The nonlinear refractive index n2 shows negative nonlinearity of the sample and it is measured to be n2 = -5.6 x 10-8 cm2 /W. Moreover, a variation of nonlinear refractive index with intensity is observed. The nonlinear absorption coefficient is measured to be = -8.3 x 10-3 cm/W. Also the optical limiting property of the sample has been investigated using frequency doubled Nd:YAG laser. | ||
| Keywords | ||
| Nonlinear optics; Nonlinear refractive index; scan technique; Optical limiting; Dye | ||
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