All-optical liquid device derived from negative nonlinear absorption effect in an erbium chloride solution

摘要: The dependence of the negative nonlinear absorption effect on modulation degree and frequency was investigated in an erbium chloride solution using a 807.6 nm laser diode. reverse-phased wave forms were obtained transmitted form for sample lengths greater than 6 cm. Though observed symmetrically at 0.1 MHz, they asymmetrical higher 0.25 MHz. has characteristic which is almost independent state ions because it formed by optical transitions inner shell atom.