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arXiv · 1612.02043

Photon pair generation in hydrogenated amorphous silicon microring resonators

Elizabeth Hemsley·Damien Bonneau·Jason Pelc·Ray Beausoleil·Jeremy L. O'Brien·Mark G. Thompson
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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 $3.73 \pm 0.25 \times 10^{-17}m^2/W$. 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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Elizabeth Hemsley, Damien Bonneau, Jason Pelc, Ray Beausoleil, Jeremy L. O'Brien, Mark G. Thompson. 2016-12-06. Photon pair generation in hydrogenated amorphous silicon microring resonators. https://arxiv.org/abs/1612.02043

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