Ozone concentration control by application of filamented ultrashort ultraviolet laser pulsesOzone concentration control by application of filamented ultrashort ultraviolet laser pulses Αφίσα σε Συνέδριο Conference Poster 2015-11-082008enA novel idea of controlling the concentration of ozone in the troposphere by applying femtosecond filamented ultraviolet laser pulses is investigated in laboratory conditions. Due to the local formation of ozone above highly polluted urban areas there is a lack of control in a global manner. In the present work, ozone photolysis was carried out by applying ultraviolet laser pulses at various schemes: a) nanosecond pulses at 308 nm and b) femtosecond pulses (unfilamented and filamented) at 248 nm. The results showed, that ozone photolysis at 248 nm by femtosecond filamented beam is much stronger than a 308 nm focused nanosecond one by a factor of 10 on the total time of ozone decomposition. http://creativecommons.org/licenses/by/4.0/2nd International Symposium on Filamentation Kortsalioudakis Nathanail Κορτσαλιουδακης Ναθαναηλ Moustaizis Stavros Tzortzakis Stelios Laser pulses, Picosecond Light pulses, Picosecond Light pulses, Ultrashort Picosecond laser pulses Picosecond light pulses Ultrashort laser pulses Ultrashort light pulses laser pulses ultrashort laser pulses picosecond light pulses picosecond light pulses ultrashort picosecond laser pulses picosecond light pulses ultrashort laser pulses ultrashort light pulses