Photon pair generation in hydrogenated amorphous silicon microring resonators

被引：10
|
作者：
Hemsley, Elizabeth [1 ,2 ]
Bonneau, Damien [1 ,2 ]
Pelc, Jason [3 ]
Beausoleil, Ray [3 ]
O'Brien, Jeremy L. [1 ,2 ]
Thompson, Mark G. [1 ,2 ]
机构：
[1] Univ Bristol, HH Wills Phys Lab, Quantum Engn Technol Labs, Bristol BS8 1FD, Avon, England
[2] Univ Bristol, Dept Elect & Elect Engn, Bristol BS8 1FD, Avon, England
[3] Hewlett Packard Labs, 1501 Page Mill Rd, Palo Alto, CA 94304 USA
来源：
SCIENTIFIC REPORTS | 2016年 / 6卷
基金：
英国工程与自然科学研究理事会; 欧洲研究理事会;
关键词：
OPTICAL NONLINEARITY; MODULATION; ABSORPTION; IMPACT;
D O I：
10.1038/srep38908
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
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 x 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 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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收藏
页数：8
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