کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
732752 893262 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optical limiting properties of trimeric metallo-phthalocyanines/polymer composite films
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Optical limiting properties of trimeric metallo-phthalocyanines/polymer composite films
چکیده انگلیسی

The nonlinear absorption and optical limiting properties of two trimeric metallo-phthalocyanines namely, 2,4,6-tris[2-oxa-9,10,16,17,23,24-hexa(hexylthio) phthalocyaninato M(II)]-s-triazine (M=Zn for compound ZnPc and Cu for compound CuPc) doped polyvinyl chloride (PVC) thin film in the nanosecond regime were investigated by using the open-aperture Z-scan technique. The measurements were performed using 4 ns pulses generated from a frequency-doubled Nd:YAG laser at 532 nm wavelength. OL parameters of the ratio of the excited state to ground state absorption cross-sections κ, the effective nonlinear absorption coefficient βeff, the linear absorption coefficient α0 and the saturation density or energy density Fsat values were determined. The results show that MPc/PVC composite displays much larger nonlinear absorption coefficient and lower saturable fluence for optical limiting when compared to the same Pc molecules in solution. The results indicated that both compounds exhibited good OL performances. ZnPc shows slightly better OL parameters than that of CuPc.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 43, Issue 6, September 2011, Pages 992–995
نویسندگان
, , , , ,