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Greater than one billion Q factor for on-chip microresonators

Authors :
Wu, Lue
Wang, Heming
Yang, Qifan
Ji, Qing-xin
Shen, Boqiang
Bao, Chengying
Gao, Maodong
Vahala, Kerry
Source :
Optics Letters; September 2020, Vol. 45 Issue: 18 p5129-5131, 3p
Publication Year :
2020

Abstract

High optical quality (Q) factors are critically important in optical microcavities, where performance in applications spanning nonlinear optics to cavity quantum electrodynamics is determined. Here, a record Q factor of over 1.1 billion is demonstrated for on-chip optical resonators. Using silica whispering-gallery resonators on silicon, Q-factor data is measured over wavelengths spanning the C/L bands (100 nm) and for a range of resonator sizes and mode families. A record low sub-milliwatt parametric oscillation threshold is also measured in 9 GHz free-spectral-range devices. The results show the potential for thermal silica on silicon as a resonator material.

Details

Language :
English
ISSN :
01469592 and 15394794
Volume :
45
Issue :
18
Database :
Supplemental Index
Journal :
Optics Letters
Publication Type :
Periodical
Accession number :
ejs54187264