Laser induced optical bistability in MgPc dye
Abstract
In the present work, optical bistability using a Fabry-Perot cavity containing MgPc dye dissolved in toluene of different concentrations have been experimentally investigated by using a single mode Q-switched nanosecond Nd:YAG laser operating at ~532nm. The nonlinear refractive index n2 is numerically estimated from the bistabe loop and found to be in close approximations with the previously reported values. The nature of the bistable loop depicts the reverse saturable absorption (RSA) process in the medium under study. Absorptive type bistability is found to be predominant over dispersive bistability.
Keywords
Optical bistability; Fabry-Perot cavity; Optical switching; Differential gain