Vernier spectrometer using counterpropagating soliton microcombs

Science
Qi-Fan YangKerry J Vahala

Abstract

Determination of laser frequency with high resolution under continuous and abrupt tuning conditions is important for sensing, spectroscopy, and communications. We show that a single microresonator provides rapid and broadband measurement of optical frequencies with a relative frequency precision comparable to that of conventional dual-frequency comb systems. Dual-locked counterpropagating solitons having slightly different repetition rates were used to implement a vernier spectrometer, which enabled characterization of laser tuning rates as high as 10 terahertz per second, broadly step-tuned lasers, multiline laser spectra, and molecular absorption lines. Besides providing a considerable technical simplification through the dual-locked solitons and enhanced capability for measurement of arbitrarily tuned sources, our results reveal possibilities for chip-scale spectrometers that exceed the performance of tabletop grating and interferometer-based devices.

References

Sep 7, 2001·Measurement Science & Technology·M G Allen
Mar 26, 2016·Physical Review Letters·Maxim KarpovTobias J Kippenberg
Nov 5, 2016·Science·Myoung-Gyun SuhKerry J Vahala
Nov 5, 2017·Nature Communications·Seung Hoon LeeKerry Vahala
Aug 11, 2018·Science·Tobias J KippenbergMichael L Gorodetsky
Oct 10, 2018·Nature·Brian SternMichal Lipson
Jan 1, 2016·Optica·Ian CoddingtonWilliam Swann

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Citations

May 13, 2020·Nature Communications·Hao-Jing ChenYun-Feng Xiao
Jun 20, 2020·Nature·Boqiang ShenJohn E Bowers
Mar 7, 2020·Light, Science & Applications·Xuefeng Jiang, Lan Yang
Dec 29, 2020·Light, Science & Applications·Heming WangKerry Vahala
Jan 13, 2021·Nature Communications·Andrey S VoloshinIgor A Bilenko
Feb 24, 2021·Light, Science & Applications·Xuefeng Jiang, Lan Yang
Jul 11, 2021·Nature Communications·David J BenirschkeDavid Burghoff

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