Spectral Broadening and post-compression

Mariana Cunha da Silva has been working on Spectral Broadening and post-compression, at the Voxel lab in IST.

During this experiment Mariana mentioned that in order to achieve pulses in the very limit of temporal duration requires not only an ultrashort laser system, such as the ones available in the laboratories of the GoLP team but also a post-compression installation, an extra set of equipment that broadens the spectrum allowing, after, the temporal compression of the pulse. 

Here we see how the pulse spectrum changes while propagating inside a Hollow Core Fiber, a thin cylindrical piece of glass filled with a noble gas, in this case, Argon.