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Invariance of waveguide grating mirrors to lateral displacement phase shifts
Daniel Brown, Daniel Friedrich, Frank Brückner +3
We present a method to analyse the coupling of lateral displacements in nanoscale structures, in particular waveguide grating mirrors (WGM), into the phase of a reflected Gaussian…
Michelson interferometer with diffractively-coupled arm resonators in second-order Littrow configuration
Michael Britzger, Maximilian H. Wimmer, Alexander Khalaidovski +7
Michelson-type laser-interferometric gravitational-wave (GW) observatories employ very high light powers as well as transmissively- coupled Fabry-Perot arm resonators in order to r…
Interferometer readout-noise below the Standard Quantum Limit of a membrane
Tobias Westphal, Daniel Friedrich, Henning Kaufer +7
Here we report on the realization of a Michelson-Sagnac interferometer whose purpose is the precise characterization of the motion of membranes showing significant light transmissi…
Diffractively coupled Fabry-Perot resonator with power-recycling
Michael Britzger, Daniel Friedrich, Stefanie Kroker +6
We demonstrate the optical coupling of two cavities without light transmission through a substrate. Compared to a conventional coupling component, that is a partially transmissive…
Laser interferometry with translucent and absorbing mechanical oscillators
D. Friedrich, H. Kaufer, T. Westphal +7
The sensitivity of laser interferometers can be pushed into regimes that enable the direct observation of quantum behaviour of mechanical oscillators. In the past, membranes with s…
Waveguide grating mirror in a fully suspended 10 meter Fabry-Perot cavity
Daniel Friedrich, Bryan W. Barr, Frank Brückner +14
We report on the first demonstration of a fully suspended 10m Fabry-Perot cavity incorporating a waveguide grating as the coupling mirror. The cavity was kept on resonance by readi…
Realization of a monolithic high-reflectivity cavity mirror from a single silicon crystal
Frank Brückner, Daniel Friedrich, Tina Clausnitzer +6
We report on the first experimental realization of a high-reflectivity cavity mirror that solely consists of a single silicon crystal. Since no material was added to the crystal, t…
All-reflective coupling of two optical cavities with 3-port diffraction gratings
Oliver Burmeister, Michael Britzger, André Thüring +4
The shot-noise limited sensitivity of Michelson-type laser interferometers with Fabry-Perot arm cavities can be increased by the so-called power-recycling technique. In such a sche…