Photon pair generation in hydrogenated amorphous silicon microring resonators

We generate photon pairs in a-Si:H microrings using a CW pump, and find the Kerr coefficient of a-Si:H to be 3.73 ± 0.25 × 10(−17)m(2)/W. By measuring the Q factor with coupled power we find that the loss in the a-Si:H micro-rings scales linearly with power, and therefore cannot originate from two p...

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Detalles Bibliográficos
Autores principales: Hemsley, Elizabeth, Bonneau, Damien, Pelc, Jason, Beausoleil, Ray, O’Brien, Jeremy L., Thompson, Mark G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5171649/
https://www.ncbi.nlm.nih.gov/pubmed/27996014
http://dx.doi.org/10.1038/srep38908
Descripción
Sumario:We generate photon pairs in a-Si:H microrings using a CW pump, and find the Kerr coefficient of a-Si:H to be 3.73 ± 0.25 × 10(−17)m(2)/W. By measuring the Q factor with coupled power we find that the loss in the a-Si:H micro-rings scales linearly with power, and therefore cannot originate from two photon absorption. Theoretically comparing a-Si:H and c-Si micro-ring pair sources, we show that the high Kerr coefficient of this sample of a-Si:H is best utilized for microrings with Q factors below 10(3), but that for higher Q factor devices the photon pair rate is greatly suppressed due to the first order loss.

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