Charge density wave melting in TiSe₂

TiSe₂ is an intriguing material that hosts a (2x2x2) charge density wave (CDW) phase below 200K and which can become superconducting when breaking the CDW long range order by elevated pressures or Cu doping. The ideal tool to study such a material is time and angular resolved photoelectron spectroscopy (trARPES), as it allows to directly acess the dynamics of the two spectral representation of the CDW state, the folded Se4p* band and the CDW gap. In this work we study these quantities in dependence of pump fluence, going from a perturbation of the CDW order in the low fluence regime to a complete phase transition in the high fluence regime.