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Status of the GEO 600 squeezed-light laser
Alexander Khalaidovski, Henning Vahlbruch, Nico Lastzka +5
In the course of the high-frequency upgrade of GEO 600, its optical configuration was extended by a squeezed-light laser [1]. Recently, a non-classically enhanced measurement sensi…
Long-term stable squeezed vacuum state of light for gravitational wave detectors
Alexander Khalaidovski, Henning Vahlbruch, Nico Lastzka +4
Currently, the German/British gravitational wave detector GEO600 is being upgraded in course of the GEO-HF program. One part of this upgrade consists of the integration of a squeez…
High-efficiency frequency doubling of continuous-wave laser light
Stefan Ast, Ramon Moghadas Nia, Axel Schönbeck +6
We report on the observation of high efficiency frequency doubling of 1550 nm continuous-wave laser light in a nonlinear cavity containing a periodically poled potassium titanyl ph…
The GEO600 squeezed light source
Henning Vahlbruch, Alexander Khalaidovski, Nico Lastzka +3
The next upgrade of the GEO600 gravitational wave detector is scheduled for 2010 and will, in particular, involve the implementation of squeezed light. The required non-classical l…
Observation of squeezed states with strong photon number oscillations
Moritz Mehmet, Henning Vahlbruch, Nico Lastzka +2
Squeezed states of light constitute an important nonclassical resource in the field of high-precision measurements, e.g. gravitational wave detection, as well as in the field of qu…
Experimental characterization of frequency dependent squeezed light
Simon Chelkowski, Henning Vahlbruch, Boris Hage +4
We report on the demonstration of broadband squeezed laser beams that show a frequency dependent orientation of the squeezing ellipse. Carrier frequency as well as quadrature angle…