Photon pair generation in hydrogenated amorphous silicon microring resonators

Elizabeth Hemsley; Damien Bonneau; Jason Pelc; Ray Beausoleil; Jeremy L. O'Brien; Mark G. Thompson

doi:10.1038/srep38908

Photon pair generation in hydrogenated amorphous silicon microring resonators

Elizabeth Hemsley, Damien Bonneau, Jason Pelc, Ray Beausoleil, Jeremy L. O'Brien, Mark G. Thompson

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

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 m²/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 10³, but that for higher Q factor devices the photon pair rate is greatly suppressed due to the first order loss.

Original language	English
Article number	38908
Journal	Scientific Reports
Volume	6
DOIs	https://doi.org/10.1038/srep38908
Publication status	Published - 20 Dec 2016
Externally published	Yes

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10.1038/srep38908Licence: CC BY

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abstract = "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 m2/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 103, but that for higher Q factor devices the photon pair rate is greatly suppressed due to the first order loss.",

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T1 - Photon pair generation in hydrogenated amorphous silicon microring resonators

AU - Hemsley, Elizabeth

AU - Bonneau, Damien

AU - Pelc, Jason

AU - Beausoleil, Ray

AU - O'Brien, Jeremy L.

AU - Thompson, Mark G.

PY - 2016/12/20

Y1 - 2016/12/20

N2 - 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 m2/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 103, but that for higher Q factor devices the photon pair rate is greatly suppressed due to the first order loss.

AB - 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 m2/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 103, but that for higher Q factor devices the photon pair rate is greatly suppressed due to the first order loss.

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JO - Scientific Reports

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Photon pair generation in hydrogenated amorphous silicon microring resonators

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