Mechanism of optical limiting in metalloporphyrins under visible continuous radiation

Abstract

Both the Kerr effect and thermal nonlinear optical effects are studied simultaneously using cw lasers in metalloporphyrin compounds. The optical limiting performance of Zn-porphyrins is demonstrated and its dependence on sample position is examined.

All-optical modulation and photonic diode based on spatial self-phase modulation in porphyrin–napthalimide molecules

“…In our previous report, 42 the values of n 2 for phthalocyanines samples were in the range of (1.46–11.53) × 10 −5 cm 2 W −1 . Zhang et al 43 studied the NLO effects in metalloporphyrins and reported the values of n 2 of the order of 10 −6 cm 2 W −1 . Hassan et al 44 reported the values of n 2 for the polymer solution, which was 0.33 × 10 −6 cm 2 W −1 .…”