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Photoluminescence characterizations and nonlinear optical of PM-355 nuclear track detector film by alpha-particles and laser irradiation
Physica Scripta ( IF 2.9 ) Pub Date : 2020-05-26 , DOI: 10.1088/1402-4896/ab7e33
R K Fakher Alfahed 1 , Abdulameer Imran 2 , Munaf S Majeed 1 , Hussain Ali Badran 2
Affiliation  

The imaging processing technique was used for studying a laser beam nature that transmitted through films of PM-355. The thermal nonlinearity of PM-355 films was studied using a 635 nm cw diode laser at 15 mW as the source of excitation. Third order nonlinear optical properties of PM-355 films irradiated with α -particles at different times and pristine sample has been studied using Z-scan technique. The samples showed a negative and large nonlinear refractive index and reverse saturable absorption (RSA) with high values of the nonlinear absorption coefficient. The fluorescence spectra of PM-355 films were investigated at room temperature and wavelength range of 250–500 nm for a pristine film and in different times of exposure to α -particles. The broad peaks were between 350, 420 and 465 nm. All-optical switching property of PM-355 samples irradiated with α -particles at 20 min was also studied using the standard pump-probe technique.

中文翻译:

α粒子和激光辐照PM-355核径迹探测器膜的光致发光特性和非线性光学

成像处理技术用于研究透过PM-355胶片的激光束特性。以635 mw的15 mW连续二极管激光器为激发源,研究了PM-355膜的热非线性。利用Z扫描技术研究了在不同时间和原始样品对α-粒子辐照的PM-355薄膜的三阶非线性光学性质。样品显示出负值和较大的非线性折射率以及具有高非线性吸收系数值的反向饱和吸收(RSA)。在室温和波长范围为250–500 nm的原始膜中以及在暴露于α粒子的不同时间下,研究了PM-355膜的荧光光谱。宽峰在350、420和465 nm之间。
更新日期:2020-05-26
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