Intermittently purge a gas cell comprising a hollow core fiber of a supercontinuum source.

摘要

Hollow-core fiber superconlinuum sources require high power input of extremely short laser pulses to generate nonlinear effects in the fiber. The fiber is positioned in a gas cell comprising a gas suitable to enable the generation of supercontinuum light. Unfortunately the gas cell and/or fiber may also comprise contaminants (carbon hydrates, particles and the like). Because of the high laser input power the contaminants within the gas cell or fiber may burn into any surface of the hollow con: fiber.