Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Takamizawa, Akifumi"'
Autor:
Takamizawa, Akifumi, Hokari, Ryohei, Kagami, Sota, Le, Thu H. H., Takei, Ryohei, Hagimoto, Ken, Yanagimachi, Shinya
A magneto-optical trap of cesium atoms was generated by applying a circularly polarized cooling laser beam onto a reflective two-dimensional diffraction grating with an aperture and by retroreflecting the incident beam passing through the aperture wh
Externí odkaz:
http://arxiv.org/abs/2412.11502
Autor:
Takamizawa, Akifumi
Publikováno v:
Optics Express 32(1), 774-784 (2024)
In this study, the frequency of an external cavity diode laser with an antireflection-coated laser diode was continuously tuned over a range of 14.8 GHz, which was 4.5 times larger than the free spectral range, by only sweeping the injection current
Externí odkaz:
http://arxiv.org/abs/2309.07393
Autor:
Kobayashi, Takumi, Takamizawa, Akifumi, Akamatsu, Daisuke, Kawasaki, Akio, Nishiyama, Akiko, Hosaka, Kazumoto, Hisai, Yusuke, Wada, Masato, Inaba, Hajime, Tanabe, Takehiko, Yasuda, Masami
Publikováno v:
Phys. Rev. Lett. 129, 241301 (2022)
We search for ultralight scalar dark matter candidates that induce oscillations of the fine structure constant, the electron and quark masses, and the quantum chromodynamics energy scale with frequency comparison data between an $^{171}$Yb optical la
Externí odkaz:
http://arxiv.org/abs/2212.05721
Autor:
Tanabe, Takehiko, Akamatsu, Daisuke, Kobayashi, Takumi, Takamizawa, Akifumi, Yanagimachi, Shinya, Ikegami, Takeshi, Suzuyama, Tomonari, Inaba, Hajime, Okubo, Sho, Yasuda, Masami, Hong, Feng-Lei, Onae, Atsushi, Hosaka, Kazumoto
Publikováno v:
Journal of the Physical Society of Japan, 84, 115002 (2015)
We performed an absolute frequency measurement of the $^1S_{0}$-$^3P_{0}$ transition in $^{87}$Sr with a fractional uncertainty of $1.2 \times 10^{-15}$, which is less than one third that of our previous measurement. A caesium fountain atomic clock w
Externí odkaz:
http://arxiv.org/abs/1509.03967
Akademický článek
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Publikováno v:
Applied Optics, Vol. 53, No. 3, pp. 435-440 (2014)
In this study, incoherent light with a spectral linewidth of 7 nm and 140 mW of power was generated from a laser diode into which incoherent light emitted from a superluminescent diode was injected with 2.7 mW of power. The spectral linewidth of the
Externí odkaz:
http://arxiv.org/abs/1310.2018
Autor:
Takamizawa, Akifumi, Shimoda, Koichi
Semi-classical calculation of an oscillating dipole induced in a two-level atom indicates that spherical radiation from the dipole under coherent interaction, i.e., Rayleigh scattering, has a power level comparable to that of spontaneous emission res
Externí odkaz:
http://arxiv.org/abs/1204.4972
Autor:
Takamizawa, Akifumi, Shimoda, Koichi
Variations in the spatial intensity distribution of light caused by coherent interaction with two-level atoms are determined by semi-classically calculating a term for interference between incident light and spherical radiation from the atom. The int
Externí odkaz:
http://arxiv.org/abs/1204.4973
Publikováno v:
Workshop on Near Field Optics, Australia, 28-Nov., 2001
Optical near field has been generated by Laguarre-Gaussian doughnut beam on inner surface of "atom funnel". The resulting optical near field has been measured with the help of fiber probe and a consequent effect on cold atoms- released from MOT, has
Externí odkaz:
http://arxiv.org/abs/physics/0305124
Akademický článek
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