![](https://fat.physics.bme.hu/sites/fat.physics.bme.hu/files/femtolaser.jpg)
Femtosecond laser technology reserach topics in our department : femtosecond pulse shape analysis, ultrashort pulse measurement techniques, development of acousto optic laser modulator for the use of laser pulse amplitude and phase stabilization. We actively cooperate with the ELI-ALPS Szeged research facility is to train students in our laser physics cousres and laboratories to master moder laser physics knowldege and it's practical aspects.
![](/sites/fat.physics.bme.hu/files/users/Beleznai%20Szabolcs/Projekt_Femto01.jpg)
Pulse shaping is achieved by direct modulation of the spectral components of the pulse. Using acousto-optical higher order dispersion compensating compressor or by creating shape-specific pulse trains (pump-probe, quantum control etc. excitation).
![](/sites/fat.physics.bme.hu/files/users/Beleznai%20Szabolcs/Projekt_Femto03.jpg)
Physical implementation:
Many acoustic, individually controlled frequency channel that diffract into optically narrow bands - the pulse is the sum of these components. Four RF channels relative phase and amplitude modulation: by changing the relative phase and intensity of the channels we modifiy the pulse shape and spectrum.
![](/sites/fat.physics.bme.hu/files/users/Beleznai%20Szabolcs/Projekt_Femto02.jpg)
Kutatási terület:
Optika