Abstract
Indium-phthalocyanine-chloride (PcInCl) films have been deposited with different thicknesses onto polyacetate flexible substrate to function as a new optical limiting and laser filter application. PcInCl thin films' crystal structure has been studied by X-ray diffraction, which has amorphous forms in the different thicknesses of 50–140 nm. The optical properties of PcInCl films of various thicknesses, both linear and nonlinear, have been calculated and discussed. The refractive index and the energy gap are 2.7 and 1.36 eV, respectively. The measured nonlinear refractive and nonlinear third-order susceptibility were in the range of 10-10 esu. The high laser optical limiting of PcInCl films indicated that they could be a promising material for various laser filtering.
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