https://doi.org/10.1051/epjconf/202328704028
Bispectral Optical Cavity based on Twin Metamirrors
1 Technical University of Braunschweig, Institute for Semiconductor Technology, Hans-Sommer-Str. 66, Braunschweig, Germany
2 CAVITY technologies UG, Wilhelmsgarten 3, Braunschweig, Germany
3 Laboratory for Emerging Nanometrology (LENA), Langer Kamp 6a/b, Braunschweig, Germany
4 Physikalisch-Technische Bundesanstalt, Bundesallee 100, Braunschweig, Germany
* e-mail: liam.shelling-neto@tu-braunschweig.de
Published online: 18 October 2023
Metasurfaces, the two-dimensional variant of metamaterials, manipulate light in unique ways, opening up a whole new world of optical functionalities, ranging from optical imaging to quantum optics. High reflectivities and tailored phase profiles could allow such metamirrors to outperform conventional multilayer mirrors for high-precision optical interferometry due to their low thermal noise. Here, we design twin metamirrors with theoretical reflectivities of > 99.9 % at 1064 nm and 1550 nm. These mirrors can be implemented in bispectral low-noise optical cavities, which would reduce the number of cavities or can be used as a transfer cavity for quantum experiments like atomic clocks.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
