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of 83
pro vyhledávání: '"Gerginov, Vladislav"'
A study of scalar optically-pumped magnetometers for use in magnetoencephalography without shielding
Publikováno v:
Physics in Medicine and Biology, vol 66 175030, Sept 2021
Scalar optically-pumped magnetometers (OPMs) are being developed in small packages with high sensitivities. The high common-mode rejection ratio of these sensors allows for detection of very small signals in the presence of large background fields ma
Externí odkaz:
http://arxiv.org/abs/2105.02316
Autor:
Gerginov, Vladislav
Publikováno v:
Phys. Rev. Applied 11, 024008 (2019)
We demonstrate the sensitivity of a sensor based on an optically-pumped radio-frequency (RF) atomic magnetometer to the polarization state of the detected RF magnetic field, and measure $>$36 dB difference in amplitude sensitivity for opposite circul
Externí odkaz:
http://arxiv.org/abs/1809.08978
Publikováno v:
IEEE Trans. Ultrason. Ferroelectr. Freq. Control 64, 761 (2017)
We describe an optical frequency stabilization scheme of a microwave oscillator that is used for the interrogation of primary caesium fountain clocks. Because of its superior phase noise properties, this scheme, which is based on an ultrastable laser
Externí odkaz:
http://arxiv.org/abs/1609.05718
Publikováno v:
Phys. Rev. A 93, 043423 (2016)
We present experimental work for improved atom loading in the optical molasses of a caesium fountain clock, employing a low-velocity intense source of atoms (LVIS) [Lu et al., Phys. Rev. Lett. 77, 3331 (1996)], which we modified by adding a "dark" st
Externí odkaz:
http://arxiv.org/abs/1601.04852
Autor:
Falke, Stephan, Lemke, Nathan, Grebing, Christian, Lipphardt, Burghard, Weyers, Stefan, Gerginov, Vladislav, Huntemann, Nils, Hagemann, Christian, Al-Masoudi, Ali, Häfner, Sebastian, Vogt, Stefan, Sterr, Uwe, Lisdat, Christian
Publikováno v:
New J. Phys. 16, 073023 (2014)
We have measured the absolute frequency of the optical lattice clock based on $^{87}$Sr at PTB with an uncertainty of $3.9\times 10^{-16}$ using two caesium fountain clocks. This is close to the accuracy of today's best realizations of the SI second.
Externí odkaz:
http://arxiv.org/abs/1312.3419
We describe a new method to determine the position of the atomic cloud during its interaction with the microwave field in the cavity of a fountain clock. The positional information is extracted from the spectrum of the F=3,mF=0 to F=4,mF=-1 hyperfine
Externí odkaz:
http://arxiv.org/abs/1202.3067
Autor:
Stalnaker, Jason E., Mbele, Vela, Gerginov, Vladislav, Fortier, Tara M., Diddams, Scott A., Hollberg, Leo, Tanner, Carol E.
We report measurements of absolute transition frequencies and hyperfine coupling constants for the 8S_{1/2}, 9S_{1/2}, 7D_{3/2}, and 7D_{5/2} states in ^{133}Cs vapor. The stepwise excitation through either the 6P_{1/2} or 6P_{3/2} intermediate state
Externí odkaz:
http://arxiv.org/abs/1001.3071
The magnetic octupole moment of 87Rb is determined from hyperfine intervals in the 5p 2P[3/2] state measured by Ye et al. [Opt. Lett. 21, 1280 (1996)]. Hyperfine constants A = 84.7189(22) MHz, B = 12.4942(43) MHz, and C = -0.12(09) kHz are obtained f
Externí odkaz:
http://arxiv.org/abs/0810.5745
Akademický článek
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Autor:
Stowe, Matthew C., Thorpe, Michael J., Pe'er, Avi, Ye, Jun, Stalnaker, Jason E., Gerginov, Vladislav, Diddams, Scott A.
Publikováno v:
In Advances In Atomic, Molecular, and Optical Physics 2008 55:1-60
