Zobrazeno 1 - 10
of 37
pro vyhledávání: '"M. V. Okhapkin"'
Publikováno v:
New Journal of Physics, Vol 25, Iss 8, p 083026 (2023)
A tunable vacuum-ultraviolet (VUV) laser source based on four-wave frequency mixing in xenon is presented. Using seed radiation from two continuous-wave lasers, the system allows for precise control of the VUV frequency and is developed for the reson
Externí odkaz:
https://doaj.org/article/804ec6ec7a014c03aa7b381cf954005a
Autor:
Christoph E. Düllmann, Johannes Thielking, Peter G. Thirolf, M. V. Okhapkin, Ekkehard Peik, David M. Meier, Lars von der Wense, Benedict Seiferle, Przemysław Głowacki
Publikováno v:
Nature
The isotope $^{229}$Th is the only nucleus known to possess an excited state $^{229m}$Th in the energy range of a few electron volts, a transition energy typical for electrons in the valence shell of atoms, but about four orders of magnitude lower th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cb1a5037822e13fa790c873675ceb55
https://doi.org/10.1038/s41586-018-0011-8
https://doi.org/10.1038/s41586-018-0011-8
Autor:
R. A. Müller, M. V. Okhapkin, David-Marcel Meier, Johannes Thielking, Ekkehard Peik, Przemysław Głowacki, Andrey Surzhykov
Publikováno v:
Physical Review A. 99
Using resonant two-step laser excitation of trapped $^{232}{\mathrm{Th}}^{+}$ ions, we observe 166 previously unknown energy levels of even parity within the energy range from 7.8 to 9.8 eV and angular momenta from $J=1/2$ to $7/2$. We also classify
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc8b8234e7fa1b07ab4643e169353900
https://doi.org/10.1103/physreva.99.052514
https://doi.org/10.1103/physreva.99.052514
Publikováno v:
Physical Review A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=r3c4b2081b22::bc8b8234e7fa1b07ab4643e169353900
We present a Nd:YAG ultra-stable laser system operating at 946 nm and demonstrate a fractional frequency instability of $1.1\times10^{-16}$ at 1 s by pre-stabilizing it to a 30 cm-long ULE cavity at room temperature. All key analog components have be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::354e74398bc005330f00b963130b1dda
Autor:
Ekkehard Peik, M. V. Okhapkin, Przemysław Głowacki, Johannes Thielking, Marianna Safronova, Sergey G. Porsev, Mikhail Kozlov, David-Marcel Meier
Publikováno v:
Physical Review Letters. 121
The isotope $^{229}\mathrm{Th}$ is unique in that it possesses an isomeric state of only a few electron volts above the ground state, suitable for nuclear laser excitation. An optical clock based on this transition is expected to be a very sensitive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9259fb50ab21baa89ff89098597f437
https://doi.org/10.1103/physrevlett.121.213001
https://doi.org/10.1103/physrevlett.121.213001
Autor:
M S, Safronova, S G, Porsev, M G, Kozlov, J, Thielking, M V, Okhapkin, P, Głowacki, D M, Meier, E, Peik
Publikováno v:
Physical review letters. 121(21)
The isotope ^{229}Th is unique in that it possesses an isomeric state of only a few electron volts above the ground state, suitable for nuclear laser excitation. An optical clock based on this transition is expected to be a very sensitive probe for v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::1f79c4166c5ed644ddb63a99ec54e5ac
https://pubmed.ncbi.nlm.nih.gov/30517806
https://pubmed.ncbi.nlm.nih.gov/30517806
Publikováno v:
Physical Review Letters
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=r3c4b2081b22::e9259fb50ab21baa89ff89098597f437
Publikováno v:
Quantum Electronics. 42:514-517
A single-frequency travelling-wave Nd:YAG laser with a wide wavelength tuning range achieved due to the use of a temperature-controlled intracavity KTP filter is studied. The output laser characteristics and the frequency tuning range are presented f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9f87b7b76fc3dade96c07008aa89eb3
https://doi.org/10.1070/qe2012v042n06abeh014831
https://doi.org/10.1070/qe2012v042n06abeh014831
Autor:
S. M. Ignatovich, Sergei A. Kuznetsov, Yu A Matyugin, Sergei N Bagaev, Mikhail N Skvortsov, M. V. Okhapkin, V. S. Pivtsov, M I Nesterenko
Publikováno v:
Quantum Electronics. 42:250-257
We report high-precision frequency measurements of the separate hyperfine structure (HFS) components of the emission B — X system transitions of 127I2 molecules in the 982 — 985 nm range. To resolve the HFS of the emission lines, advantage was ta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b84ffa521fb46e35b97106d9a416056
https://doi.org/10.1070/qe2012v042n03abeh014799
https://doi.org/10.1070/qe2012v042n03abeh014799