title: Automodulations in an extended cavity, passively modelocked Ti:Sapphire oscillator--period doubling and chaos.
abstract: An extended cavity Ti:Sapphire oscillator exhibits stable operation for positively chirped pulses, while in the negative chirp regime multiple pulses are present in the cavity. At the border of these regimes automodulations, being an effect of the interplay between population inversion, laser medium polarization and the laser pulse field, appear. Two particular instabilities: period doubling and chaotic behavior of the pulse train envelope are observed. Complex temporal evolution of the pulse spectrum within the modulation period is investigated.
authors.affiliation: Department of Chemistry, University of Warsaw, Warsaw, Poland. kardas@chem.uw.edu.pl
authors.forename: Tomasz M
authors.initials: TM
authors.lastname: Kardaś
authors.forename: Wojciech
authors.initials: W
authors.lastname: Gadomski
authors.forename: Bozena
authors.initials: B
authors.lastname: Ratajska-Gadomska
authors.forename: Piotr
authors.initials: P
authors.lastname: Wasylczyk
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D000669:Amplifiers, Electronic; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D009991:Oscillometry / Q000295:instrumentation*; D014025:Titanium / Q000737:chemistry*
chemical_list: D014025:Titanium; D000537:Aluminum Oxide