Open AccessPromising Materials for High Power Laser Isolators
Author(s) -
Stevens Kevin T.,
Schlichting Wolfgang,
Foundos Gregory,
Payne Alexis,
Rogers Evan
Publication year - 2016
Publication title -
laser technik journal
Language(s) - English
Resource type - Journals
eISSN - 1863-9119
pISSN - 1613-7728
DOI - 10.1002/latj.201600017
Subject(s) - verdet constant , terbium , optical isolator , materials science , fluoride , refractive index , crystal (programming language) , laser , absorption (acoustics) , crystal growth , faraday cage , optics , faraday effect , optoelectronics , inorganic chemistry , crystallography , chemistry , composite material , luminescence , magnetic field , physics , quantum mechanics , computer science , programming language
Northrop Grumman Synoptics is developing the growth of large singlecrystal fluoride materials for Faraday rotator / isolator applications. These materials exhibit smaller nonlinear refractive index and thermo‐optic coefficients, while maintaining Verdet constants near those of the commonly used terbium gallium garnet (TGG) crystals. In particular, the cubic potassium terbium fluoride, KTF (KTb 3 F 10 ) crystal has low absorption and thermo‐optic coefficients. The crystal growth and performance of these single‐crystal fluoride materials will be discussed as well as recent improvements to the performance of TGG crystals.