Open AccessEfficient nonlinear frequency conversion with a dynamically structured nonlinearity
Author(s) -
Klaus Hartinger,
S. Nirmalgandhi,
Jesse W. Wilson,
Randy A. Batels
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.006919
Subject(s) - ultrashort pulse , nonlinear system , optics , nonlinear optics , high harmonic generation , pulse (music) , pulse shaping , transient (computer programming) , sum frequency generation , harmonic , laser , physics , second harmonic generation , computer science , acoustics , quantum mechanics , detector , operating system
A general technique for quasi phase matching of nonlinear frequency conversion in molecular gases through the dynamically structured nonlinear optical response of a molecular ensemble is presented. We show that the transient molecular alignment created by an ultrafast alignment pulse can be controlled to periodically modulate the strength of the nonlinear optical susceptibility in the reference frame of a fundamental pulse propagating through the aligned molecules. Simulations show efficient third harmonic generation of an ultrafast fundamental laser pulse.