Feedback-controlled and digitally processed coherent population trapping resonance conversion in 87Rb vapour to high-contrast resonant peak

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Feedback-controlled and digitally processed coherent population trapping resonance conversion in ⁸⁷Rb vapour to high-contrast resonant peak. / Kobtsev, S.; Radnatarov, D.; Khripunov, S. et al.

In: New Journal of Physics, Vol. 19, No. 4, 043016, 11.04.2017.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{91556d77eceb4fe0a970e2db1e072ee9,

title = "Feedback-controlled and digitally processed coherent population trapping resonance conversion in 87Rb vapour to high-contrast resonant peak",

abstract = "This work reports on the study of a new approach to achievement of high-contrast resonant signals from coherent population trapping (CPT) resonances in 87Rb vapour based on feedback control and real-time digital processing of several measured parameters. This method consists in stabilisation of the value of a function depending on several system parameters measured as the frequency difference of the bichromatic pump radiation is scanned through adjustment of the pumping radiation power with a feedback loop. The present work made use of two such parameters: the pumping radiation power incident on and exiting from the optical cell. Exploration of the proposed method has shown that stabilisation of a linear combination of these two parameters results in a resonant peak whose contrast exceeds that of regular CPT resonance by more than two orders of magnitude at relatively slow CPT resonance scan rates, (scanning frequency of the frequency difference of the bichromatic field ∼1 Hz). When dynamically exciting the CPT resonance (the scan frequency of the frequency difference of the bichromatic field equal to 2 kHz), the resonant peak contrast was enhanced by over an order of magnitude.",

keywords = "coherent population trapping resonance, feedback, Rb vapour, real-time digital processing, FREQUENCY STANDARD, LINE",

author = "S. Kobtsev and D. Radnatarov and S. Khripunov and I. Popkov and V. Andryushkov and T. Steshchenko and V. Lunin and Yu Zarudnev",

year = "2017",

month = apr,

day = "11",

doi = "10.1088/1367-2630/aa68b9",

language = "English",

volume = "19",

journal = "New Journal of Physics",

issn = "1367-2630",

publisher = "IOP Publishing Ltd.",

number = "4",

}

RIS

TY - JOUR

T1 - Feedback-controlled and digitally processed coherent population trapping resonance conversion in 87Rb vapour to high-contrast resonant peak

AU - Kobtsev, S.

AU - Radnatarov, D.

AU - Khripunov, S.

AU - Popkov, I.

AU - Andryushkov, V.

AU - Steshchenko, T.

AU - Lunin, V.

AU - Zarudnev, Yu

PY - 2017/4/11

Y1 - 2017/4/11

N2 - This work reports on the study of a new approach to achievement of high-contrast resonant signals from coherent population trapping (CPT) resonances in 87Rb vapour based on feedback control and real-time digital processing of several measured parameters. This method consists in stabilisation of the value of a function depending on several system parameters measured as the frequency difference of the bichromatic pump radiation is scanned through adjustment of the pumping radiation power with a feedback loop. The present work made use of two such parameters: the pumping radiation power incident on and exiting from the optical cell. Exploration of the proposed method has shown that stabilisation of a linear combination of these two parameters results in a resonant peak whose contrast exceeds that of regular CPT resonance by more than two orders of magnitude at relatively slow CPT resonance scan rates, (scanning frequency of the frequency difference of the bichromatic field ∼1 Hz). When dynamically exciting the CPT resonance (the scan frequency of the frequency difference of the bichromatic field equal to 2 kHz), the resonant peak contrast was enhanced by over an order of magnitude.

AB - This work reports on the study of a new approach to achievement of high-contrast resonant signals from coherent population trapping (CPT) resonances in 87Rb vapour based on feedback control and real-time digital processing of several measured parameters. This method consists in stabilisation of the value of a function depending on several system parameters measured as the frequency difference of the bichromatic pump radiation is scanned through adjustment of the pumping radiation power with a feedback loop. The present work made use of two such parameters: the pumping radiation power incident on and exiting from the optical cell. Exploration of the proposed method has shown that stabilisation of a linear combination of these two parameters results in a resonant peak whose contrast exceeds that of regular CPT resonance by more than two orders of magnitude at relatively slow CPT resonance scan rates, (scanning frequency of the frequency difference of the bichromatic field ∼1 Hz). When dynamically exciting the CPT resonance (the scan frequency of the frequency difference of the bichromatic field equal to 2 kHz), the resonant peak contrast was enhanced by over an order of magnitude.

KW - coherent population trapping resonance

KW - feedback

KW - Rb vapour

KW - real-time digital processing

KW - FREQUENCY STANDARD

KW - LINE

UR - http://www.scopus.com/inward/record.url?scp=85018283033&partnerID=8YFLogxK

U2 - 10.1088/1367-2630/aa68b9

DO - 10.1088/1367-2630/aa68b9

M3 - Article

AN - SCOPUS:85018283033

VL - 19

JO - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

IS - 4

M1 - 043016

ER -

ID: 8675197