Millimeter-long Fiber Fabry-Perot cavities
Optics
2016-03-16 v1 Atomic Physics
Quantum Physics
Abstract
We demonstrate fiber Fabry-Perot (FFP) cavities with concave mirrors that can be operated at cavity lengths as large as 1.5mm without significant deterioration of the finesse. This is achieved by using a laser dot machining technique to shape spherical mirrors with ultralow roughness and employing single-mode fibers with large mode area for good mode matching to the cavity. Additionally, in contrast to previous FFPs, these cavities can be used over an octave-spanning frequency range with adequate coatings. We also show directly that shape deviations caused by the fiber's index profile lead to a finesse decrease as observed in earlier attempts to build long FFP cavities, and show a way to overcome this problem.
Cite
@article{arxiv.1603.04791,
title = {Millimeter-long Fiber Fabry-Perot cavities},
author = {Konstantin Ott and Sebastien Garcia and Ralf Kohlhaas and Klemens Schüppert and Peter Rosenbusch and Romain Long and Jakob Reichel},
journal= {arXiv preprint arXiv:1603.04791},
year = {2016}
}