Browsing by Subject "Resonant absorption"

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Influence of welding current and focal position on the resonant absorption of laser radiation in a TIG welding arc

Emde, B.; Huse, M.; Hermsdorf, J.; Kaierle, S.; Wesling, V.; Overmeyer, L. (Amsterdam : Elsevier B.V., 2014)

The work presents the influence of welding current and focal position on the resonant absorption of diode laser radiation in a TIG welding arc. The laser beam is guided perpendicular to the electrical arc to avoid an ...
Resonant optical excitation of longitudinal-optical phonons and intermixing in InAsAlAs single quantum dots

Sarkar, D.; Van Der Meulen, H.P.; Calleja, J.M.; Meyer, J.M.; Haug, Rolf J.; Pierz, Klaus (College Park, MD : American Institute of Physics, 2008)

Excitations of a single InAsAlAs self-assembled quantum dot were investigated by photoluminescence excitation spectroscopy. Resonant absorption by longitudinal-optical (LO) phonons of the quantum dot and the barriers is ...
Significance of the resonance condition for controlling the seam position in laser-assisted TIG welding

Emde, B.; Huse, M.; Hermsdorf, J.; Kaierle, Stefan; Wesling, V.; Overmeyer, Ludger; Kozakov, R.; Uhrlandt, D. (Amsterdam : Elsevier B.V., 2016)

As an energy-preserving variant of laser hybrid welding, laser-assisted arc welding uses laser powers of less than 1 kW. Recent studies have shown that the electrical conductivity of a TIG welding arc changes within the ...

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