Multiphoton transitions in a spin-polarized 3D optical lattice

1994 ◽  
Vol 72 (5) ◽  
pp. 625-628 ◽  
Author(s):  
A. Hemmerich ◽  
C. Zimmermann ◽  
T. W. Hänsch
Keyword(s):  
Optical Lattice ◽  
Spin Polarized

scholarly journals An optical lattice clock with spin-polarized 87Sr atoms

2007 ◽  
Vol 48 (1) ◽  
pp. 11-17 ◽  
Author(s):  
X. Baillard ◽  
M. Fouché ◽  
R. Le Targat ◽  
P. G. Westergaard ◽  
A. Lecallier ◽  
...  
Keyword(s):  
Optical Lattice ◽  
Spin Polarized ◽  
Optical Lattice Clock

scholarly journals Improved Frequency Measurement of a One-Dimensional Optical Lattice Clock with a Spin-Polarized Fermionic87Sr Isotope

2006 ◽  
Vol 75 (10) ◽  
pp. 104302 ◽  
Author(s):  
Masao Takamoto ◽  
Feng-Lei Hong ◽  
Ryoichi Higashi ◽  
Yasuhisa Fujii ◽  
Michito Imae ◽  
...  
Keyword(s):  
Optical Lattice ◽  
Frequency Measurement ◽  
One Dimensional ◽  
Spin Polarized ◽  
Optical Lattice Clock

Observation of Spin Polarized Clock Transition in 87 Sr Optical Lattice Clock

2014 ◽  
Vol 31 (12) ◽  
pp. 123201 ◽  
Author(s):  
Qiang Wang ◽  
Yi-Ge Lin ◽  
Ye Li ◽  
Bai-Ke Lin ◽  
Fei Meng ◽  
...  
Keyword(s):  
Optical Lattice ◽  
Clock Transition ◽  
Spin Polarized ◽  
Optical Lattice Clock

scholarly journals Sub-Doppler laser cooling of $^{39}$K via the 4S$\to$5P transition

2019 ◽  
Vol 6 (4) ◽  
Author(s):  
Govind Unnikrishnan ◽  
Michael Gröbner ◽  
Hanns-Christoph Nägerl
Keyword(s):  
Magnetic Field ◽  
Phase Space ◽  
Laser Cooling ◽  
Vibrational Level ◽  
Optical Lattice ◽  
Optical Pumping ◽  
Phase Space Density ◽  
Peak Density ◽  
Alkali Atoms ◽  
Spin Polarized

We demonstrate sub-Doppler laser cooling of ^{39}39K using degenerate Raman sideband cooling via the 4S_{1/2} \rightarrow1/2→5P_{1/2}1/2 transition at 404.8 nm. By using an optical lattice in combination with a magnetic field and optical pumping beams, we obtain a spin-polarized sample of up to 5.6 \times 10^{7}5.6×107 atoms cooled down to a sub-Doppler temperature of 4 \upmuμK, reaching a peak density of 3.9 \times 10^{9}3.9×109 atoms/cm^{3}3, a phase-space density greater than 10^{-5}10−5, and an average vibrational level of \langle \nu \rangle=0.6⟨ν⟩=0.6 in the lattice. This work opens up the possibility of implementing a single-site imaging scheme in a far-detuned optical lattice utilizing shorter wavelength transitions in alkali atoms, thus allowing improved spatial resolution.

OPTICAL LATTICE CLOCKS WITH SINGLE OCCUPANCY BOSONS AND SPIN-POLARIZED FERMIONS TOWARD 10-17 ACCURACY

2010 ◽  
Author(s):  
M. TAKAMOTO ◽  
T. AKATSUKA ◽  
H. HACHISU ◽  
T. TAKANO ◽  
K. TOTSUKA ◽  
...  
Keyword(s):  
Optical Lattice ◽  
Spin Polarized

scholarly journals Interrogation of spin polarized clock transition in strontium optical lattice clock

2018 ◽  
Vol 67 (7) ◽  
pp. 070601
Author(s):  
Guo Yang ◽  
Yin Mo-Juan ◽  
Xu Qin-Fang ◽  
Wang Ye-Bing ◽  
Lu Ben-Quan ◽  
...  
Keyword(s):  
Optical Lattice ◽  
Clock Transition ◽  
Spin Polarized ◽  
Optical Lattice Clock

scholarly journals Mixture of bosonic and spin-polarized fermionic atoms in an optical lattice

2008 ◽  
Vol 77 (2) ◽  
Author(s):  
Lode Pollet ◽  
Corinna Kollath ◽  
Ulrich Schollwöck ◽  
Matthias Troyer
Keyword(s):  
Optical Lattice ◽  
Spin Polarized ◽  
Fermionic Atoms

Spin-polarized Scanning Electron Microscopy

1990 ◽  
Vol 48 (4) ◽  
pp. 768-769
Author(s):  
Kazuyuki Koike ◽  
Hideo Matsuyama
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
High Speed ◽  
Magnetic Thin Films ◽  
Electron Spin Polarization ◽  
Acquisition Time ◽  
Magnetization Direction ◽  
Spin Polarized ◽  
Conventional Methods ◽  
Scanning Electron

Spin-polarized scanning electron microscopy (spin SEM), where the secondary electron spin polarization is used as the image signal, is a novel technique for magnetic domain observation. Since its first development by Koike and Hayakawa in 1984, several laboratories have extensively studied this technique and have greatly improved its capability for data extraction and its range of applications. This paper reviews the progress over the last few years.Almost all the high expectations initially held for spin SEM have been realized. A spatial resolution of several hundreds angstroms has been attained, which is nearly one order of magnitude higher than that of conventional methods for thick samples. Quantitative analysis of magnetization direction has been performed more easily than with conventional methods. Domain observation of the surface of three-dimensional samples has been confirmed to be possible. One of the drawbacks, a long image acquisition time, has been eased by combining highspeed image-signal processing with high speed scanning, although at the cost of image quality. By using spin SEM, the magnetic structure of a 180 degrees surface Neel wall, magnetic thin films, multilayered films, magnetic discs, etc., have been investigated.

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