Photoinduced x(2) for second harmonic generation in stoichiometric silicon nitride waveguides

M.A. Garcia Porcel, Jesse Mak, Caterina Taballione, Victoria Schermerhorn, J.P. Epping, Petrus J.M. van der Slot, Klaus J. Boller

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We present for the first time second harmonic generation in amorphous stoichiometric Si3N4 waveguides grown via low pressure chemical vapor deposition. An effective second-order susceptibility (χ (2)) is established via the coherent photogalvanic effect. A waveguide was designed to phase match a horizontally (parallel to the waveguide width) polarized hybrid EH00 mode at 1064 nm with the higher-order hybrid transverse EH02 mode at 532 nm. A mode-locked laser delivering 6.2-ps pulses at 1064 nm with a repetition rate of 20 MHz was used as pump. When pumped with a constant average power, it was found that the photoinduced χ (2) is established over a time of the order of 1000 s in as-manufactured waveguides, during which the second harmonic signal grows from below noise to a saturation value. The life-time of the photoinduced χ (2) is at least a week. In steady state, we obtain a maximum conversion efficiency close to 0.4% for an average pump power of 13 mW inside the waveguide. The effective second-order susceptibility is found to be 8.6 pm/V.
Original languageEnglish
Title of host publicationIntegrated Optics
Subtitle of host publicationPhysics and Simulations III
EditorsPavel Cheben, Jiří Čtyroký, Iñigo Molina-Fernández
Place of PublicationBellingham, WA
ISBN (Electronic)9781510609860
ISBN (Print)9781510609853
Publication statusPublished - 16 May 2017
EventSPIE Optics + Optoelectronics 2017 - Clarion Congress Hotel, Prague, Czech Republic
Duration: 24 Apr 201727 Apr 2017

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceSPIE Optics + Optoelectronics 2017
Country/TerritoryCzech Republic


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