Photon pair generation in hydrogenated amorphous silicon microring resonators.

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^-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.

SUBMITTER: Hemsley E 

PROVIDER: S-EPMC5171649 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature