Abstract

The process of white light supercontinuum generation is accompanied by conical emission formation, where shorter wavelengths have higher divergence. At the moment there are at least two points of view explaining the origin of conical emission. The first one attracts four-waves parametric amplification [1].The second one is based on the idea that shorter wavelengths are generated in the area with higher intensity [2]. As the intensity in filament increases with approaching to filament axe, the size of the aria, where short wavelengths are generated, decreases. So it results in higher divergence.

© 2007 IEEE