Řízení a stabilizace vlnové délky Ti:Sa laseru, který je použit k optickému čerpání atomů rubidia

Control and stabilization wavelength of Ti:Sa laser which is used for an optical pumping of atoms of rubidium

abstrakt

en

The rapidly growing interest in production of hyperpolarized noble gasses (HpG), predominantly 3He and 129Xe for Nuclear Magnetic Resonance (NMR) experiments is driven by potentially attractive medical applications. Neither helium nor xenon is normally present in the body, so the experiments do not suffer from unwanted background signals. Among the potential medicine applications, the opportunity to image organs with low water content and/or with air spaces, such as colon or lungs, has raised a considerable interest. Current conventional imaging techniques cannot provide good images of these hollow spaces, and not even of the surrounding tissues. These applications show that HpG may become a useful tool for non-invasive investigation of human lung ventilation, giving access to static imaging during breathhold, dynamics of inspiration/expiration, and functional imaging. The phenomenon of angular momentum transfer by the exchange of spins between optically pumped Rb atoms and nuclear spins of 3He was first reported by Bouchiat (1960) and theoretically described by Herman (1965).

viz anglická anotace

The rapidly growing interest in production of hyperpolarized noble gasses (HpG), predominantly 3He and 129Xe for Nuclear Magnetic Resonance (NMR) experiments is driven by potentially attractive medical applications. Neither helium nor xenon is normally present in the body, so the experiments do not suffer from unwanted background signals. Among the potential medicine applications, the opportunity to image organs with low water content and/or with air spaces, such as colon or lungs, has raised a considerable interest. Current conventional imaging techniques cannot provide good images of these hollow spaces, and not even of the surrounding tissues. These applications show that HpG may become a useful tool for non-invasive investigation of human lung ventilation, giving access to static imaging during breathhold, dynamics of inspiration/expiration, and functional imaging. The phenomenon of angular momentum transfer by the exchange of spins between optically pumped Rb atoms and nuclear spins of 3He was first reported by Bouchiat (1960) and theoretically described by Herman (1965).

optical pumping, Ti:Sa laser, spectroscopy, laser frequency stabilization

07.09.2004

Department of Physics, Slovak University of Agriculture, Nitra

80-8069-410-9

Abstracts of Papers and Posters, XIVth Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics

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