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Measuring optical signals in the femtowatt (10-15) to nanowatt (10-9) range can be a daunting task. In order to achieve significant improvements in noise rejection we need to turn to a lock-in amplifier, which can improve noise rejection by 3 orders of magnitude or more.
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.
Oxford Instruments has enabled superior plasma process solutions for its customers in Asia by recently installing state of the art plasma etch equipment in their applications laboratory at the Industrial Technology Research Institute (ITRI) in Taiwan
For applications such as industrial measuring technology and microscopy, optical inspection tasks, and laser processing, PI (Physik Instrumente) now offers a new series of motorised XY stages (V-731 and L-731) that work with velocities up to 200mm/s