Nonresonant third-order nonlinear properties of NaPO3 - WO3 - Bi2 O 3 glasses in the near infrared

Abstract

The nonlinear (NL) refractive index, n2, of NaPO3 - WO3 - Bi2 O3 glass with different relative amounts of the constituents was measured at 1064 and 800 nm using the Z -scan and the thermally managed eclipse Z -scan techniques, respectively. The values of n2 10-15 cm2 /W and negligible NL absorption coefficient were determined. The large values of the NL refractive index and the very small NL absorption indicate that these materials have large potential for all-optical switching applications. © 2009 American Institute of Physics.