Oliver Fitzau
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View article: Investigations on single-mode fibers with rectangular core geometry
Investigations on single-mode fibers with rectangular core geometry Open
In this paper, we present a theoretical and experimental analysis on the properties of rectangular core fibers. We investigate the single-mode regime and the bending properties with respect to the aspect ratio of the rectangular core. In c…
View article: A new laser technology for LISA
A new laser technology for LISA Open
Within the European Space Agency (ESA) activity “Gravitational Wave Observatory Metrology Laser” we designed a laser head to fulfill the LISA laser requirements using a non-NPRO seed laser technology: an external cavity diode laser (ECDL) …
View article: Design and fabrication of a fused 7 × 1 35/50 µm into 125/250 µm fiber combiner
Design and fabrication of a fused 7 × 1 35/50 µm into 125/250 µm fiber combiner Open
We present the design and construction of a fiber combiner comprising 7 × 1 35/50 µm input fibers with thin cladding and an output fiber with 125 µm diameter to maintain the high beam brightness. A transmission higher than 98% between the …
View article: High stability laser for interferometric earth gravity measurements
High stability laser for interferometric earth gravity measurements Open
ESA’s Gravity field and steady-state Ocean Circulation Explorer (GOCE) mission and the American-German Gravity Recovery and Climate Experiment (GRACE) mission map the Earth’s gravity field and deliver valuable data for climate research.
View article: Key optical components for spaceborne lasers
Key optical components for spaceborne lasers Open
Spaceborne lidar (light detection and ranging) systems have a large potential to become powerful instruments in the field of atmospheric research. Obviously, they have to be in operation for about three years without any maintenance like r…