People involved

Research line leader

Staff researchers
 
Associate researchers
Andrea Crespi
Giulio Cerullo
Roberta Ramponi
 
Post docs
Eugenia Lepera
Giacomo Corrielli
Petra Paiè
Airán Ródenas Seguí

PhD students
Tommaso Zandrini
Ioannis Pitsios
Diogo Pereira Lopes
Simone Atzeni

Master thesis students
Alberto Beccari
Luca Frighetto
Martina Riva
Claudio Conci
Valentina Parodi
Federico Pellegatta
Giacomo Bocci
Simone Piacentini
Federico Sala
 
 
Femtosecond laser micromachining of transparent materials is a rapidly expanding field that started in the late '90s. It has evolved from an exotic phenomenological observation into a robust, flexible and powerful microfabrication technology, which produces devices that can compete with those fabricated by standard 

News

Paper on Hyperentanglement on a chip has been published on Light: Science & Applications.

Paper on Experimental perfect state transfer of an entangled photonic qubit has been published on Nature Communications.

Paper on Quantum Suppression Law in 3D integrated photonic circuits has been published on Nature Communications.

Paper on Experimental Scattershot Boson Sampling has been published on Science Advances.

technologies. In addition, femtosecond laser micromachining has unique three-dimensional capabilities that enables unprecedented designs and device architectures.

The core idea behind this technology is nonlinear absorption. The extremely high intensity achieved in the focal volume of a focussed femtosecond laser pulse induces nonlinear phenomena such as multiphoton or tunneling ionization and avalanche ionization, thus producing a very localized deposit of energy in the volume of the material. Suitable motion of the sample can produce 3D modifications.

The basic devices that can be fabricated by this technology are optical waveguides and microfluidic channels (the latter requires a subsequent etching step). Further processing tasks that can be performed by this technology are: welding, cutting, surface texturing, etc. Combination of all these capabilities result extremely powerful in producing complex photonic and optofluidic devices that are also characterized in our labs.