Abstract
The dispersive wave (DW) has been intensively investigated in fiber optics. It plays an essential role in supercontinuum generation; and new spectral components on either side of the pump wavelength are possible by this technique with fiber dispersion control [1]. The typically small core size of the fiber, however, limits the applicable pulse energy; especially so when multiple zero-dispersion wavelengths (ZDWs) are needed to generate DW in the red side of the pump wavelength. The use of bulk materials is promising for high energy. Most nonlinear bulk materials have normal group velocity dispersion (GVD) in the near-infrared (NIR) pump wavelength; therefore, when a conventional Kerr (self-focusing and positive) nonlinearity is employed, the study of DW easily falls into another dilemma: filamentation likely kicks in, complicates the whole process, and greatly impedes its application.
© 2015 IEEE
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