Düsseldorf 2007 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 30: Poster Nichtlineare optische Effekte und Lichtquellen
Q 30.8: Poster
Dienstag, 20. März 2007, 16:30–18:30, Poster C
The fiber amplifier system for laser cooling of indium atoms — •Jae-Ihn Kim, Dietmer Haubrich, and Dieter Meschede — Institute for applied physics, University of Bonn, Bonn, Germany
A fiber amplifier system at λ = 976 nm is demonstrated, which will form the basis for the generation of ultra-violet light at 325 nm, a resonant transition( |52D5/2,F=7⟩-|52P3/2,F=6⟩) of indium. We have employed a special Yb-doped double-clad fiber(YDCF) in which the inner cladding has a small diameter to increase the pump overlap factor as well as air-hole structures around the inner cladding to increase the numerical aperture. The performance of the YDCF system, such as the slope efficiency and the spectral and polarization characteristics of the output were investigated. The output of the YDCF amplifier will ultimately be frequency-trippled through the use of enhancement cavities.