Absorption coefficients and scattering losses of TGG, TGP, KTF, FS, and CeF₃ magneto-optical crystals in the visible via cavity ring-down spectroscopy
Abstract
We demonstrate a method for determining small absorption coefficients and surface-scattering losses of crystals using cavity ring-down spectroscopy and perform measurements on magneto-optical crystals of terbium gallium garnet (TGG), terbium gallium phosphate (TGP), fused silica (FS), potassium terbium fluoride (KTF), and CeF₃ at 532 and 634 nm. Surface scattering is distinguished from absorption losses by using crystals of different lengths. A figure of merit (FoM) for magneto-optical crystals is defined to evaluate their suitability as intracavity optics in optical cavity applications. It is found that TGP has the highest FoM for crystal lengths up to ∼10mm, whereas CeF₃ and FS potentially outperform TGP for longer crystals. Single-pass applications are also briefly discussed. Show more
Publication status
publishedExternal links
Journal / series
Applied OpticsVolume
Pages / Article No.
Publisher
OpticaOrganisational unit
03449 - Merkt, Frédéric / Merkt, Frédéric
More
Show all metadata
ETH Bibliography
no
Altmetrics