, Volume 59, Issue 6, pp 573-580

Nonlinear optical propagation and self-limiting effect in liquid-crystalline fibers

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access


The nonlinear optical properties of the isotropic phase of liquid crystals induced by nanosecond laser pulses are analyzed in the context of nonlinear multi-mode propagation in a liquid-crystal-cored fiber. The negative thermal density nonlinearity of the core gives rise to an intensity-dependent loss in the core-guided transmission and optical action. Experiments conducted with such liquid-crystal-cored fibers show that the optical limiting threshold for nanosecond laser pulses can be as low as 0.09 J/cm2, which is one of the lowest among known nonlinear optical materials and structures, including bulk liquid-crystal films.