114 citations · 223 across the 10 of their papers we have counts for
10 papers
Grating magneto-optical trap of cesium atoms with an additional retroreflected laser beam
Akifumi Takamizawa, Ryohei Hokari, Sota Kagami +4
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 an…
Continuous frequency tuning of an external cavity diode laser significantly beyond the free spectral range by sweeping the injection current
Akifumi Takamizawa
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…
Search for ultralight dark matter from long-term frequency comparisons of optical and microwave atomic clocks
Takumi Kobayashi, Akifumi Takamizawa, Daisuke Akamatsu +8
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…
Improved frequency measurement of the - clock transition in Sr using the Cs fountain clock at NMIJ as a transfer oscillator
Takehiko Tanabe, Daisuke Akamatsu, Takumi Kobayashi +10
We performed an absolute frequency measurement of the - transition in Sr with a fractional uncertainty of , which is less than one thi…
Generation of incoherent light from a laser diode based on the injection of an emission from a superluminescent diode
Akifumi Takamizawa, Shinya Yanagimachi, Takeshi Ikegami
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 d…
Rayleigh scattering under light-atom coherent interaction
Akifumi Takamizawa, Koichi Shimoda
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 scatte…