title: Analytic and experimental investigations on influence of harmonic generation on acousto-optical modulation.
abstract: In application, laser power is modulated prior to harmonic generation to a large part. Consequently modulation characteristics are influenced as a result of the non-linearity of harmonic generation. Within this paper, straight-forward approaches to calculate modulation key parameters (rise time, fall time, bandwidth and contrast ratio) of an acousto-optical modulator prior to harmonic generation stage are presented. The results will be compared to experimental data for third harmonic generation (THG) of a 1064 nm fs-laser which is power-modulated by a TeO2-AOM prior to THG. In the latter case, rise time and fall time are significantly reduced to approximately 66% after THG both in experimental and analytical study.
authors.affiliation: Chair of Photonic Technologies, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany. peter.bechtold@lpt.uni-erlangen.de
authors.forename: Peter
authors.initials: P
authors.lastname: Bechtold
authors.forename: Oliver
authors.initials: O
authors.lastname: Hentschel
authors.forename: Michael
authors.initials: M
authors.lastname: Schmidt
mesh_terms: D003198:Computer Simulation; D007834:Lasers; D008962:Models, Theoretical; D013016:Sound; D013685:Telecommunications