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Optical pumping of long-lived quantum states is used to identify groups of ions in phase space and follow their transport. The principles and variants of a novel diagnostic method, as well as new physical aspects and applications, including space-dependent ...
A simple optical alignment system is described for adjusting the angle of the axis of rotation of an Andrews-Beams rotor in magic-angle NMR expts. A low-power ruby laser mounted between the horns of the magnet cryostat is used a light source. The beam from ...
A new luminescence band is observed in optically pumped Ge-doped (Al,Ga)As multilayer structures, that were previously subjected to laser irradiation. The band is shifted by 90 meV to longer wavelength with respect to the luminescence peak of the unexposed ...
We have developed an apparatus to polarize 3He gas (at a few torrs pressure) by optical pumping from a 4He light source and to measure the evolution of the magnetic moment for relaxation studies. The magnetic moment is measured by applying a pulse of radio ...
A simple energy-grained master equation was used to model data on the multiphoton dissocn. of CF2HCl as a function of laser fluence and Ar bath-gas pressure. Information on energy transfer from vibrationally excited CF2HCl was obtained from an anal. of the ...
New luminescence centers can be generated by irradiating AlxGa1-xAs structures with focused light from a CW Kr-ion laser operated at 647 nm. The luminescence centers are generated at a laser power density of 0.5 MW/cm2. Regions as small as 0.8 μm wide a ...
The optical pumping process in IR multiphoton induced unimol. reactions was studied by measuring the pressure dependence of the reaction yield as a function of the laser energy fluence and pulse shape. The dissocn. of SF6 is taken as a model reaction. Rate ...
The speckle pattern in the image of a diffusely scattering plane surface illuminated by two mutually inclined quasi plane waves split from a common laser source gives a direct display of the coherence properties of that light source. This can be used as a ...
A mol. beam mass spectrometer was constructed to study the formation of van der Waals clusters over a wide mass range. Using this app. (SF6)m was detected with 1 ? m ? 100 in the adiabatic expansion of SF6. By irradiating the SF6 jet with a continuous-wave ...
SF6 in a free jet was vibrationally excited by a continuous-wave CO2 laser. The subsequent energy transfer processes, in which vibrational energy is degraded, lead to changes in the beam's spatial, velocity and cluster-size distributions. These changes wer ...
