Frequency shift mitigation in a cold-atom CPT clock

X. Liu; Eugene Ivanov; J. Kitching; E.A. Donley

doi:10.1109/FCS.2016.7546750

Frequency shift mitigation in a cold-atom CPT clock

X. Liu, Eugene Ivanov, J. Kitching, E.A. Donley

Research output: Chapter in Book/Conference paper › Conference paper › peer-review

2 Citations (Scopus)

Abstract

© 2016 IEEE.An upgrade in the laser system for our cold-atom clock based on coherent population trapping is described that makes use of an electro-optic modulator to significantly improve the phase coherence of the interrogation spectrum relative to what was achieved with our previous phase-locked loop approach. With this improvement in phase coherence, we have observed a reduction in the light shift by over two orders of magnitude. We present the impact of this improvement on the performance of the clock, for which the light shift was previously dominated by the incoherent light in the laser spectrum. We also demonstrate a new optical setup to reduce the Doppler shift.

Original language	English
Title of host publication	2016 IEEE International Frequency Control Symposium
Editors	Lute Maleki OEwaves
Publisher	IEEE, Institute of Electrical and Electronics Engineers
ISBN (Electronic)	9781509020911
ISBN (Print)	9781509020911
DOIs	https://doi.org/10.1109/FCS.2016.7546750
Publication status	Published - 16 Aug 2016
Event	70th IEEE International Frequency Control Symposium - New Orleans, United States Duration: 9 May 2015 → 12 May 2016

Conference

Conference	70th IEEE International Frequency Control Symposium
Abbreviated title	IFCS 2016
Country/Territory	United States
City	New Orleans
Period	9/05/15 → 12/05/16

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10.1109/FCS.2016.7546750

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@inproceedings{7a4d40bc42c54bf5830bfe8274a2368f,

title = "Frequency shift mitigation in a cold-atom CPT clock",

abstract = "{\textcopyright} 2016 IEEE.An upgrade in the laser system for our cold-atom clock based on coherent population trapping is described that makes use of an electro-optic modulator to significantly improve the phase coherence of the interrogation spectrum relative to what was achieved with our previous phase-locked loop approach. With this improvement in phase coherence, we have observed a reduction in the light shift by over two orders of magnitude. We present the impact of this improvement on the performance of the clock, for which the light shift was previously dominated by the incoherent light in the laser spectrum. We also demonstrate a new optical setup to reduce the Doppler shift.",

author = "X. Liu and Eugene Ivanov and J. Kitching and E.A. Donley",

year = "2016",

month = aug,

day = "16",

doi = "10.1109/FCS.2016.7546750",

language = "English",

isbn = "9781509020911",

editor = "{Maleki OEwaves}, Lute",

booktitle = "2016 IEEE International Frequency Control Symposium",

publisher = "IEEE, Institute of Electrical and Electronics Engineers",

address = "United States",

note = "70th IEEE International Frequency Control Symposium, IFCS 2016 ; Conference date: 09-05-2015 Through 12-05-2016",

}

Liu, X, Ivanov, E, Kitching, J & Donley, EA 2016, Frequency shift mitigation in a cold-atom CPT clock. in L Maleki OEwaves (ed.), 2016 IEEE International Frequency Control Symposium., 7546750, IEEE, Institute of Electrical and Electronics Engineers, 70th IEEE International Frequency Control Symposium, New Orleans, United States, 9/05/15. https://doi.org/10.1109/FCS.2016.7546750

TY - GEN

T1 - Frequency shift mitigation in a cold-atom CPT clock

AU - Liu, X.

AU - Ivanov, Eugene

AU - Kitching, J.

AU - Donley, E.A.

PY - 2016/8/16

Y1 - 2016/8/16

N2 - © 2016 IEEE.An upgrade in the laser system for our cold-atom clock based on coherent population trapping is described that makes use of an electro-optic modulator to significantly improve the phase coherence of the interrogation spectrum relative to what was achieved with our previous phase-locked loop approach. With this improvement in phase coherence, we have observed a reduction in the light shift by over two orders of magnitude. We present the impact of this improvement on the performance of the clock, for which the light shift was previously dominated by the incoherent light in the laser spectrum. We also demonstrate a new optical setup to reduce the Doppler shift.

AB - © 2016 IEEE.An upgrade in the laser system for our cold-atom clock based on coherent population trapping is described that makes use of an electro-optic modulator to significantly improve the phase coherence of the interrogation spectrum relative to what was achieved with our previous phase-locked loop approach. With this improvement in phase coherence, we have observed a reduction in the light shift by over two orders of magnitude. We present the impact of this improvement on the performance of the clock, for which the light shift was previously dominated by the incoherent light in the laser spectrum. We also demonstrate a new optical setup to reduce the Doppler shift.

U2 - 10.1109/FCS.2016.7546750

DO - 10.1109/FCS.2016.7546750

M3 - Conference paper

SN - 9781509020911

BT - 2016 IEEE International Frequency Control Symposium

A2 - Maleki OEwaves, Lute

PB - IEEE, Institute of Electrical and Electronics Engineers

T2 - 70th IEEE International Frequency Control Symposium

Y2 - 9 May 2015 through 12 May 2016

ER -

Frequency shift mitigation in a cold-atom CPT clock

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