Spatial and spectral properties of second harmonic generation in a periodically poled KTP waveguide

0399554 - FZÚ 2014 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Machulka, R. - Svozilík, J. - Soubusta, Jan - Peřina, Jan - Haderka, O.
Spatial and spectral properties of second harmonic generation in a periodically poled KTP waveguide.
Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics /18./. Bellingham: SPIE, 2012 - (Peřina jr., J.; Nožka, L.; Hrabovský, M.; Senderáková, D.; Urbańczyk, W.). Proceedings of SPIE, 8697. ISBN 978-0-8194-9481-8. ISSN 0277-786X.
[Czech-Polish-Slovak optical conference on wave and quantum aspects of contemporary optics /18./. Ostravice (CZ), 03.09.2012-07.09.2012]
Grant CEP: GA AV ČR IAA100100713
Grant ostatní: GA MŠk(CZ) OC09026
Výzkumný záměr: CEZ:AV0Z10100522
Klíčová slova: waveguide * second harmonic generation * periodic poling
Kód oboru RIV: BH - Optika, masery a lasery

We present experimental characterization of periodically-poled KTP waveguide studying the process of second harmonic generation. Spatial and spectral properties of three types of the nonlinear processes (Type 0, I, and II) have been observed simultaneously utilizing the first, second, and third harmonics of the spatial nonlinear modulation. Experimental results have been interpreted using a model based on scalar finite elements method, which has been adopted in order to calculate spatial mode profiles, propagation constants, and frequencies of the interacting fields. Correlations between spatial and spectral properties of the fundamental and second-harmonic fields have been revealed. Individual nonlinear processes can be switched on and off combining spatial and spectral filtering. Also the influence of waveguide parameters to the second-harmonic spectra has been addressed.
Trvalý link: http://hdl.handle.net/11104/0226822