Optical properties and Faraday effect of ceramic terbium gallium garnet for a room temperature Faraday rotator

Abstract

The optical properties, Faraday effect and Verdet constant of ceramic terbium gallium garnet (TGG) have been measured at 1064 nm, and were found to be similar to those of single crystal TGG at room temperature. Observed optical characteristics, laser induced bulk-damage threshold and optical scattering properties of ceramic TGG were compared with those of single crystal TGG. Ceramic TGG is a promising Faraday material for high-average-power YAG lasers, Yb fiber lasers and high-peak power glass lasers for inertial fusion energy drivers.

Pr9.33(SiO4)6O2 Crystals: Czochralski Growth and Near UV-Visible FR Performance

“…These conclusions from our Rietveld refinement present good agreement with previous ones found in other oxyapatite-type silicates [22][23][24]28]. MPMS-XL, San Diego, CA, USA) in the temperature range from 2 to 300 K with an applied field of 0.1 T. Faraday rotation angles of the as-grown PSO single crystal along the crystallographic c-axis were measured by using the photo-extinction technique [31] at room temperature with the average values of six data for interpretation. A commercial TGG single crystal, supplied by Physcience Optoelectronic Co., Ltd. Beijing, was used as a reference material and has also been evaluated under the same test conditions.…”

“…The absorption spectrum of as-grown PSO crystal was tested by using a Lambda900 UV-Vis-NIR spectrophotometer (Perkin-Elmer, Waltham, MA, USA), over the spectral range of 200-800 nm at room temperature with a 2 nm resolution. The temperature-dependence of the field-cooled (FC) and zero-field-cooled (ZFC) magnetic susceptibilities were tested by using a superconducting quantum interference device magnetometer (SQUID, Quantum Design MPMS-XL, San Diego, CA, USA) in the temperature range from 2 to 300 K with an applied field of 0.1 T. Faraday rotation angles of the as-grown PSO single crystal along the crystallographic c-axis were measured by using the photo-extinction technique [31] at room temperature with the average values of six data for interpretation. A commercial TGG single crystal, supplied by Physcience Opto-electronic Co., Ltd. Beijing, was used as a reference material and has also been evaluated under the same test conditions.…”

Crystal growth and characterization of the pyrochlore Tb2Ti2O7

“…in another Cz setup, with lower oxygen partial pressure in the atmosphere (pure nitrogen without oxygen admixture) and from purer material (99.999% instead of 99.99%) than crystal TTO 6-1. The peak shown by this crystal near 490 nm is the 7 F 6 -5 D 4 transition of the Tb 3+ ions 33,34 . The broad absorption convoluted with the band gap is shifted further to longer wavelengths for the annealed sample.…”

Preparation of (Tb0.8Y0.2)3Al5O12 transparent ceramic as novel magneto-optical isolator material

“…The Verdet constant of S2 at 632.8 nm measured at room temperature was -108.79 rad·T −1 ·m −1 , which was approximately 37% lower than that of a reported TAG transparent ceramic sample [14] and 19% lower than that of TGG transparent ceramic [13] . Thus, doping TAG transparent ceramics with Y 3+ ions significantly affects the magneto-optical properties of the resulting material.…”

“…Over the past two decades, several studies have shown that the transparent ceramic may replace its single crystal counterpart because of its excellent properties [9,10] . The TGG ceramic was first reported in 2003 [11] , and recent studies had shown that TGG transparent ceramics exhibited qualities similar to those of single crystals [12,13] . The synthesis of TAG transparent ceramics has also been studied [14] .…”