Optical limiting properties of zinc phthalocyanines in solution and solid PMMA composite films

Tekin S., Kurum U., DURMUŞ M., YAĞLIOĞLU H. G., Nyokong T., ELMALI A.

OPTICS COMMUNICATIONS, cilt.283, sa.23, ss.4749-4753, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 283 Sayı: 23
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.optcom.2010.07.003
  • Dergi Adı: OPTICS COMMUNICATIONS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.4749-4753
  • Anahtar Kelimeler: Z-scan, Nonlinear absorption, Optical limiting, Polymer film, Phthalocyanine, INDIUM PHTHALOCYANINES, ABSORPTION
  • Ankara Üniversitesi Adresli: Evet

Özet

The nonlinear absorption and optical limiting (OL) performance of tetra- and octasubstituted zinc phthalocyanine complexes were described in solution and in the solid state using the open-aperture Z-scan technique. The measurements were performed using collimated 4 ns pulses generated from a frequency-doubled Nd:YAG laser at 532 nm wavelength. The polymeric films exhibit a much larger effective nonlinear absorption coefficient in comparison with solution. However, the parameters of the ratio of the excited to ground state absorption cross section and energy-dependent saturation in solution are much better compared to properties in the polymeric film In terms of the ratio of the excited to ground state absorption cross section, the peripherally substituted complexes show better OL performance than the non-peripherally substituted derivative. (C) 2010 Elsevier B V. All rights reserved.