Diffractively coupled Fabry-Perot resonator with power-recycling.

  title={Diffractively coupled Fabry-Perot resonator with power-recycling.},
  author={Michael Britzger and Daniel Friedrich and Stefanie Kroker and Frank Br{\"u}ckner and Oliver Burmeister and Ernst B. Kley and Andreas T{\"u}nnermann and Karsten Danzmann and Roman Schnabel},
  journal={Optics express},
  volume={19 16},
We demonstrate the optical coupling of two cavities without light transmission through a substrate. As the all-reflective coupling component, we use a dielectric low-efficiency 3-port diffraction grating. In contrast to a conventional transmissive coupling component, such an all-reflective coupler avoids all thermal effects that are associated with light absorption in the substrate. An all-reflective scheme for cavity coupling is of interest in the field of gravitational wave detection. In such… 
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