Výsledky vyhledávání - "G A Vishnyakova"

Long ULE Cavities with Relative Fractional Frequency Drift Rate below 5 × 10–16/s for Laser Frequency Stabilization

Autor: G A Vishnyakova, N. O. Zhadnov, D. S. Kryuchkov, K. S. Kudeyarov, K. Yu. Khabarova, Nikolai N. Kolachevsky

Publikováno v: Bulletin of the Lebedev Physics Institute. 47:257-261

Two ultrastable laser systems for the clock transition spectroscopy in the strontium frequency standard are developed. The high stability of laser radiation frequency is provided by the active loop for frequency referencing to the Fabry–Perot refer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7a983e07db44916784e49363e8dada30
https://doi.org/10.3103/s1068335620090079

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Compensation of residual amplitude modulation fluctuations in an optoelectronic system for laser radiation frequency stabilisation

Autor: N. O. Zhadnov, K. S. Kudeyarov, Nikolai N. Kolachevsky, G. A. Vishnyakova, D. S. Kryuchkov, K. Yu. Khabarova

Publikováno v: Quantum Electronics. 50:590-594

Fluctuations of residual amplitude modulation in a scheme of laser frequency stabilisation by a Fabry – Perot cavity reduce the frequency stability of the laser systems intended for interrogating clock transitions of atoms and ions. The dependences

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::111cccd85e01dfa2f9b70a9482fc896d
https://doi.org/10.1070/qel17367

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Frequency transfer via an ultra-stable free-space link

Autor: Nikolai N. Kolachevsky, D. S. Kryuchkov, G. A. Vishnyakova, K. Yu. Khabarova, N. O. Zhadnov, K. S. Kudeyarov

Publikováno v: Quantum Electronics. 50:267-271

An optical frequency transfer at a wavelength of 1542 nm via an ultra-stable 5-m free-space link with active compensation of the phase noise caused by atmospheric fluctuations is demonstrated. The link-induced phase noise and its contribution to the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::97cd09e96e93dff72b17fc1a5b5b98f0
https://doi.org/10.1070/qel17258

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48 -cm-long room-temperature cavities in vertical and horizontal orientations for Sr optical clock

Autor: K. S. Kudeyarov, Nikolai N. Kolachevsky, K. Yu. Khabarova, N. O. Zhadnov, G A Vishnyakova, D. S. Kryuchkov

Publikováno v: Applied optics. 60(29)

The development of an optical clock with ultimate accuracy and stability requires lasers with very narrow linewidths. We present two ultrastable laser systems based on 48-cm-long Fabry–Perot cavities made of ultralow expansion glass in horizontal a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4852b0f38830e630a10c512134283f0
https://pubmed.ncbi.nlm.nih.gov/34623997

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Ultra-Stable Atmospheric Short Link for the Optical Frequency Signal Transfer

Autor: G A Vishnyakova, K. S. Kudeyarov, D. S. Kryuchkov, K. Yu. Khabarova, N. O. Zhadnov, E. O. Chiglintsev, Nikolai N. Kolachevsky

Publikováno v: 2021 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS).

The 17 m open-air link for coherent transfer of ultrastable optical frequency signal have been demonstrated. The fractional frequency instability caused by air turbulence is suppressed by more than 3 orders of magnitude with the help of active noise

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2ac42690c2748278f4ad0a81f7aef577
https://doi.org/10.1109/eftf/ifcs52194.2021.9604310

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Temperature drift contribution to frequency instability of silicon Fabry – Perot cavities

Autor: K. S. Kudeyarov, D. S. Kryuchkov, K. Yu. Khabarova, N. O. Zhadnov, G A Vishnyakova, Nikolai N. Kolachevsky

Publikováno v: Quantum Electronics. 49:424-428

A contribution of a temperature drift near the silicon thermal expansion coefficient zero point to the fractional frequency instability of a silicon cavity is analysed. The thermal expansion coefficient of silicon is measured by an optical method nea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8af83ec80b99deb5ebb4fe15b891c284
https://doi.org/10.1070/qel17004

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Optical pumping of ultracold thulium atoms to a lower level of the clock transition and study of their depolarisation

Autor: D. Tregubov, K. Yu. Khabarova, E. S. Fedorova, D. Mishin, G. A. Vishnyakova, N. N. Kolachevsky, V. N. Sorokin, D. Provorchenko, A. Golovizin

Publikováno v: Quantum Electronics. 49:418-423

The atomic energy levels corresponding to states with the zero projection of the total angular momentum have a weak sensitivity to certain sources of shifts and, therefore, are widely used in precision spectroscopy. The optical pumping of ultracold t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::94ed82e4298638eb87eefdd72acb76be
https://doi.org/10.1070/qel16998

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Ultra-stable silicon cavities for fundamental researches and applications

Autor: N. O. Zhadnov, D. S. Kryuchkov, G. A. Vishnyakova, K. S. Kudeyarov, K. Yu. Khabarova, Nikolai N. Kolachevsky

Publikováno v: FIFTH INTERNATIONAL CONFERENCE ON QUANTUM TECHNOLOGIES (ICQT-2019).

We report on preliminary results of frequency instability of two laser systems stabilized by perspective cryogenic monocrystalline silicon cavities. The obtained value of 5×10−15 exceeds the thermal noise floor by more than an order of magnitude.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::84a056089e9ccd0bb099392ea2a8a669
https://doi.org/10.1063/5.0011496

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