Abstract
Optical grade ${{\rm Dy}_2}{{\rm O}_3}$ ceramics was successfully produced by adding a small amount of ${{\rm ZrO}_2}$ as a sintering aid and hot isostatic pressing treatment at $1500^{\circ}{\rm C}$ after pre-sintering at $1550^{\circ}{\rm C}$. No residual pores, grain boundary phases, or second phases were detected inside the transparent ceramics. Since birefringence was not observed under the polarizer, the produced ${{\rm Dy}_2}{{\rm O}_3}$ ceramics is an optically isotropic body. There was almost no beam distortion during the laser irradiation test, and the optical loss was extremely small (${\lt}{0.1}\% {\rm /cm}$). The Verdet constant was ${422}\;{{\rm rad}\,{\rm T}^{- 1}}\;{{\rm m}^{- 1}}$ at a wavelength of 633 nm, and the extinction ratio was 34 dB.
© 2020 Optical Society of America
Full Article | PDF ArticleMore Like This
I. L. Snetkov, A. I. Yakovlev, D. A. Permin, S. S. Balabanov, and O. V. Palashov
Opt. Lett. 43(16) 4041-4044 (2018)
Akio Ikesue, Yan Lin Aung, Shinji Makikawa, and Akira Yahagi
Opt. Lett. 42(21) 4399-4401 (2017)
Hiroaki Furuse and Ryo Yasuhara
Opt. Mater. Express 7(3) 827-833 (2017)