Attosecond electronic timing with rising edges of photocurrent pulses

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There has been remarkable progress in generating ultralow-noise microwaves from optical frequency combs in the last decade. While a combination of techniques has enabled tens to hundreds of attoseconds residual jitter in microwave extraction, so far most of research efforts have been focused on extracting single-tone microwaves from combs; there has been no study on the noise properties of photocurrent pulses directly extracted from the photodiode. Here, we reveal that the residual jitter between optical pulses and rising edges of photocurrent pulses can be in the tens of attoseconds regime. The rising-edge jitter is much lower than the falling-edge jitter, and further, this ultralow rising-edge jitter could be obtained by both p-i-n and (modified-)uni-travelling-carrier photodiodes. This finding can be directly used for various edge-sensitive timing applications, and further shows the potential for ultrahigh-precision timing using silicon-photonic-integrable on-chip p-i-n photodiodes. For edge-sensitive timing applications, the edge jitter of electrical pulses is important. Here, the authors report on very low rising edge jitter extracted from an optical frequency comb and explore the best condition for low jitter by minimizing the amplitude-to-timing conversion in photodiodes.
Publisher
NATURE PUBLISHING GROUP
Issue Date
2020-07
Language
English
Article Type
Article
Citation

NATURE COMMUNICATIONS, v.11, no.1, pp.3667

ISSN
2041-1723
DOI
10.1038/s41467-020-17460-6
URI
http://hdl.handle.net/10203/275935
Appears in Collection
ME-Journal Papers(저널논문)
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