Photon pair generation in hydrogenated amorphous silicon microring resonators

被引：0
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作者：
Elizabeth Hemsley
Damien Bonneau
Jason Pelc
Ray Beausoleil
Jeremy L. O’Brien
Mark G. Thompson
机构：
[1] Quantum Engineering Technology Labs,H. H. Wills Physics Laboratory and Department of Electrical & Electronic Engineering
[2] University of Bristol,undefined
[3] Hewlett-Packard Laboratories,undefined
来源：
Scientific Reports | / 6卷
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摘要：
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 × 10−17m2/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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