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Tunable lasers at work with trapped ions

Professor Tobias Schaetz from the Amo Research Group at the University of Freiburg, Germany describes the group's experimental work with trapped ion systems. Coulomb crystals consisting of isotopically pure Magnesium ions are built employing a new tunable continuous-wave (cw) laser light source: Mg atoms are isotope-selective ionized by resonant two-photon excitation at a wavelength of 285.3 nm.

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