Laboratory of Nd:YAG Laser irradiation and in situ Optical Absorption
DiFi Laboratory
Laboratory directed by: Prof. Marco Cannas

This experimental station is devoted to study processes of generation and conversion of defects induced by high power Laser radiation in pure and doped silica samples. Irradiation beam is provided by a pulsed Nd:YAG laser, equipped with non linear crystals to generate up to the fifth harmonic. The set-up is equipped with an optical fiber spectrometer to study transient absorption spectra and with a continuous Helium flow cryostat to perform temperature controlled experiments. Furthermore, the optical fiber spectrometer can be easily moved so allowing to perform transient OA experiments under irradiation with the tunable (210-2400 nm) pulsed laser available in the Time-resolved luminescence setup. The main technical features of these instruments are reported below.

Optical fiber spectrophotometer (AVANTES S2000) Light source : Deuterium Lamp Optical fibers: multimode pure silica core/F2-doped silica cladding loaded with H2, diameter of 200 µm Detection: 1200 lines/mm grating with blaze at 300 nm and CCD camera (2048 channels)

This laboratory is integrated in MeSIAM - Regional Laboratory of CNISM