Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Feedback-controlled and digitally processed coherent population trapping resonance conversion in 87Rb vapour to high-contrast resonant peak. / Kobtsev, S.; Radnatarov, D.; Khripunov, S. и др.
в: New Journal of Physics, Том 19, № 4, 043016, 11.04.2017.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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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