Abstract

The determination of rare-earth elements in gallium arsenide by a dc arc was studied. An argon and oxygen atmosphere was carefully selected to enhance the selective volatilization of rare earths which comes at the very end of arcing in this matrix. The controlled atmosphere also contributed to the suppression of the CN band and allowed the use of this region. A commercially available standard was used to mix with the matrix for preparation of synthetic standards. The recovery means were within 30% of the amount added and relative coefficients of variations are within 16%. The range of determinations, below the 1 ppm levels, were reported.

The Quantitative Spectrographic Analysis of the Rare Earth Elements*I. Determination of Samarium in NeodymiumII. Determination of Europium in Samarium

Velmer A. Fassel and Harley A. Wilhelm
J. Opt. Soc. Am. 38(6) 518-526 (1948)

The Quantitative Spectrographic Analysis of the Rare Earth Elements* III. Determination of Major Constituents in Complex Mixtures

Velmer A. Fassel
J. Opt. Soc. Am. 39(2) 187-193 (1949)

Infrared Lattice Spectra of Rare-Earth Aluminum, Gallium, and Iron Garnets

Neil T. McDevitt
J. Opt. Soc. Am. 59(9) 1240-1244 (1969)

Infrared Filters of Evaporated Gallium Arsenide

R. P. Howson
J. Opt. Soc. Am. 55(3) 271-275 (1965)

Ultra-low power fiber-coupled gallium arsenide photonic crystal cavity electro-optic modulator

Gary Shambat, Bryan Ellis, Marie A. Mayer, Arka Majumdar, Eugene E. Haller, and Jelena Vučković
Opt. Express 19(8) 7530-7536 (2011)