TY - EJOUR
AU - Dorranian, Davoud
AU - Golian, Yasaman
AU - Hojabri, Alireza
PY - 2023
DA - November
TI - Investigation of nitrogen plasma effect on the nonlinear optical properties of PMMA
T2 - Journal of Theoretical and Applied Physics
VL - 6
L1 - https://oiccpress.com/journal-of-theoretical-and-applied-physics/article/investigation-of-nitrogen-plasma-effect-on-the-nonlinear-optical-properties-of-pmma/
DO - 10.1186/2251-7235-6-1
N2 - Abstract Effects of low power direct current nitrogen plasma on linear and nonlinear optical properties of red BS dye-doped poly(methyl methacrylate) (PMMA) film are studied employing different optical techniques. From spectrometry data, it is shown that applying plasma in such a low range of power does not affect the linear absorption coefficient, linear refractive index, and optical bandgap of this dye-doped polymer; however, nonlinear parameters are changed. Experiments are performed using the second harmonic of a continuous Nd-Yag laser beam at a 532-nm wavelength and 20-mW power. The effect of nonlinear refractive index of red BS dye-doped PMMA film in broadening the laser beam is observed. The optical bleaching behavior is investigated by measurement of the intensity of laser beam through the sample. Its third-order nonlinearity is measured using close and open Z-scan data. Nonlinear absorption coefficient and refractive index, as well as real and imaginary parts of the third-order nonlinear optical susceptibility χ3, are changed significantly due to plasma treatment. PACS: 42.65.-k: 42.65.An: 42.70.Jk: 61.41. + e: 71.35.Cc.
IS - 1
PB - OICC Press
KW - Optical bleaching, Photon absorption, Refractive index, Scan, Z, Plasma, Two, Beam broadening, Nonlinear absorption, Nonlinear optics 
EN -