Zobrazeno 1 - 10
of 217
pro vyhledávání: '"Udem Thomas"'
Autor:
Canella Francesco, Weitenberg Johannes, Dwivedi Paras, Schmid Fabian, Galzerano Gianluca, Hänsch Theodor W., Udem Thomas, Ozawa Akira
Publikováno v:
EPJ Web of Conferences, Vol 287, p 07023 (2023)
Optical frequency combs operating at low repetition rate exhibit high pulse energy for a given average power. Therefore, low repetition rate frequency combs may efficiently drive nonlinear frequency conversion into the mid-infrared or extreme ultravi
Externí odkaz:
https://doaj.org/article/c28bb1092f994635b98b77a176328c35
Autor:
Canella, Francesco, Weitenberg, Johannes, Thariq, Muhammad, Schmid, Fabian, Dwivedi, Paras, Galzerano, Gianluca, Haensch, Theodor W., Udem, Thomas, Ozawa, Akira
Reducing the pulse repetition rate of an optical frequency comb increases the pulse energy for a given average power. This enhances the efficiency of nonlinear frequency conversion and it facilitates extending the accessible wavelength range, for exa
Externí odkaz:
http://arxiv.org/abs/2309.09616
Autor:
Schmid, Fabian, Weitenberg, Johannes, Moreno, Jorge, Hänsch, Theodor W., Udem, Thomas, Ozawa, Akira
Publikováno v:
Phys. Rev. A 106, L041101 (2022)
While it is straightforward to count laser-cooled trapped ions by fluorescence imaging, detecting the number of dark ions embedded and sympathetically cooled in a mixed ion crystal is more challenging. We demonstrate a method to track the number of d
Externí odkaz:
http://arxiv.org/abs/2210.02112
Autor:
Ann, Byoung-moo, Schmid, Fabian, Krause, Jonas, Hänsch, Theodor W., Udem, Thomas, Ozawa, Akira
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 52 (2019) 035002
We investigate the motional resonances of dual-species Coulomb crystals comprised of $^9$Be$^+$ and $^{24}$Mg$^+$ ions held in a 4-rod linear Paul trap. Our experimental data and simulations show that the secular motion of such mixed crystals has ric
Externí odkaz:
http://arxiv.org/abs/2102.07435
Publikováno v:
Opt. Lett. 44, 2709-2712 (2019)
We describe a simple method for measuring the residual fast phase noise of a cavity-stabilized laser using the cavity as a reference. The method is based on generating a beat note between the laser output and the strongly filtered light transmitted t
Externí odkaz:
http://arxiv.org/abs/2102.07422
Autor:
Probst, Rafael A., Milaković, Dinko, Toledo-Padrón, Borja, Curto, Gaspare Lo, Avila, Gerardo, Brucalassi, Anna, Martins, Bruno L. Canto, Leão, Izan de Castro, Esposito, Massimiliano, Hernández, Jonay I. González, Grupp, Frank, Hänsch, Theodor W., Kellermann, Hanna, Kerber, Florian, Mandel, Olaf, Manescau, Antonio, Pozna, Eszter, Rebolo, Rafael, de Medeiros, José Renan, Steinmetz, Tilo, Mascareño, Alejandro Suárez, Udem, Thomas, Urrutia, Josefina, Wu, Yuanjie, Pasquini, Luca, Holzwarth, Ronald
Publikováno v:
Nature Astronomy (2020)
Laser frequency combs (LFCs) are well on their way to becoming the next-generation calibration sources for precision astronomical spectroscopy. This development is considered key in the hunt for low-mass rocky exoplanets around solar-type stars whose
Externí odkaz:
http://arxiv.org/abs/2002.08868
Akademický článek
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Autor:
Amit, Omer, Wirthl, Vitaly, Taray, Derya, Weis, Vincent, Sarkar, Soumyadeep, Kim, Min–Cheol, Syed, Mustafa Waqar, Moreno, Jorge, Egli, Florian, Weitenberg, Johannes, Thariq, Muhammad, Strobl, Theodor, Bieringer, Malte, Hein, Linus, Karshenboim, Savely, Pohl, Randolf, Yost, Dylan C., Ozawa, Akira, Hänsch, Theodor W., Udem, Thomas
Publikováno v:
Journal of Physics: Conference Series; 2024, Vol. 2889 Issue 1, p1-11, 11p
Autor:
Pohl, Randolf, Nez, François, Udem, Thomas, Antognini, Aldo, Beyer, Axel, Fleurbaey, Hélène, Grinin, Alexey, Hänsch, Theodor W., Julien, Lucile, Kottmann, Franz, Krauth, Julian J., Maisenbacher, Lothar, Matveev, Arthur, Biraben, François
Publikováno v:
Metrologia 54, L1 (2017)
We give a pedagogical description of the method to extract the charge radii and Rydberg constant from laser spectroscopy in regular hydrogen (H) and deuterium (D) atoms, that is part of the CODATA least-squares adjustment (LSA) of the fundamental phy
Externí odkaz:
http://arxiv.org/abs/1607.03165
Akademický článek
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