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High-stability continuous wave Nd:YVO4 laser.
Photo: Piotr Matyba
The laser is integrated into a Ti:sapphire oscillator and serves as the pump laser. The oscillator is used to generate fs pulses in the range from UV at 260 nm up to visible at 780 nm. These pulses are used then for time-resolved measurements of optical excitations on surfaces of materials (metals and semiconductors).
Femtosecond pulses of the laser are used to eject electrons from surfaces of materials. Then, the kinetic energy and momentum of electrons are measured as a function of delay time between consecutive pulses of the laser. The information about the electronic structure of the material and dominant interactions in the material are extracted from the measured data. More details of the technique can be found here: https://en.wikipedia.org/wiki/Two-photon_photoelectron_spectroscopy and here: https://en.wikipedia.org/wiki/Laser-based_angle-resolved_photoemission_spectroscopy.
NA building room 190.
The instrument can only be run by trained personnel only. For use, contact Dr. Piotr Matyba, email: firstname.lastname@example.org.
The instrument is used as a pump laser for a Ti:Sapphire oscillator, which is part of surface science time-resolved two-photon photo emission spectroscopy instrument.