Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"GAS LASER"”.
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Spectroscopic studies of atomic oxygen using gas laser techniques
Massachusetts Institute of Technology. Dept. of Physics. Thesis. 1967. Ph.D.
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Alkali-rare gas photodissociation lasers: applications to laser physics and atom-atom interactions
… several experiments in which alkali--rare gas laser systems are utilized as a simple platform with which to isolate and study atom-atom interactions and fundamental physical processes that are ill-understood or have never been investigated previously. Specifically, the minimum allowable …
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Novel terahertz and nanophotonic lasers : theory, design, and fabrication
… explore numerical modeling and fabrication of laser sources. First, we demonstrate and distinguish experimentally the existence of special type of Fano resonances at k~~0 in a macroscopic two-dimensional photonic crystal slab. We fabricate a square lattice array of holes in silicon nitride …
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Towards multiple quantum well optically pumped far infrared lasers
Optically pumped lasers based on GaAs/AlGaAs multiple quantum well (MQW) structures are a potential coherent source in the far infrared (FIR) wavelengths. The FIR (~ 30 to 300 µm) is a region within the electromagnetic spectrum that has seen relatively little development. No practical solid-state …
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Nonlocal correlations between freely propagating pairs of atoms
… apparatus to more stably produce ultracold gases of metastable helium. Massive particles such as atoms exhibit a wave-like behaviour at ultracold temperatures, typically requiring micro-Kelvin temperatures for a dilute gas. Laser cooling and trapping techniques in ultrahigh vacuum chambers …
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Nonlocal correlations between freely propagating pairs of atoms
… apparatus to more stably produce ultracold gases of metastable helium. Massive particles such as atoms exhibit a wave-like behaviour at ultracold temperatures, typically requiring micro-Kelvin temperatures for a dilute gas. Laser cooling and trapping techniques in ultrahigh vacuum chambers …
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ΑΝΙΧΝΕΥΣΗ ΙΟΝΤΙΚΩΝ ΑΝΤΙΔΡΑΣΕΩΝ ΣΕ ΠΛΑΣΜΑ LASER N2
ON THE PEAK POWER OF A N2 LASER SOME "FEATURES" WHICH APPEAR AS IRREGULARITIESAT CERTAIN PRESSURE REGIONS WERE OBSERVED. THESE CANNOT BE EXPLAINED BY ANY OF THE EXISTING THEORIES. THESE "FEATURES" ATTRIBUTE TO REACTIONS AMONG ION TYPES IN N2 PLASMA. THE REACTIONS N2+N2+ -> <- N4+ AND N2(M)+N2(M') …
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Atomic alkali lasers pumped by the dissociation of photoexcited alkali-rare gas collision pairs
A new class of photoassociation lasers has been demonstrated in which photoexcited alkali-rare gas collision pairs dissociate in order to produce inversion on atomic alkali transitions. The pump acceptance bandwidths of these excimer bands, historically referred to as spectral satellites, have been …
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Study of multi-component fuel premixed combustion using direct numerical simulation
… fuels for power generation in industrial gas turbines are thus required able to meet the above demands. Examples of such fuels are synthetic gas, blast furnace gas and coke oven gas. A common characteristic of these fuels is that they are multi-component fuels, whose composition varies …