Bismuth-substituted rare earth iron garnet single crystal, faraday rotator, optical isolator, and method for producing bismuth-substituted rare earth iron garnet single crystal

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United States of America Patent

PATENT NO 12012668
APP PUB NO 20230212783A1
SERIAL NO

17995989

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Abstract

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A bismuth-substituted rare earth iron garnet single crystal suitable for Faraday rotators and optical isolators with reduced insertion loss due to suppressed valence fluctuation of Fe ions is provided. The bismuth-substituted rare earth iron garnet single crystal of the present invention is characterized by the composition formula (TbaLnbBicMg3−(a+b+c))(FedGaeTifPt5−(d+e+f))O12. In the composition formula above, 0.02≤f≤0.05, 0.02≤{3−(a+b+c)}≤0.08, and −0.01≤{3−(a+b+c)}−{f+5−(d+e+f)}≤0.01. Ln is a rare earth element and may be selected from Eu, Gd, Ho, Tm, Yb, Lu, and Y.

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Patent Owner(s)

Patent OwnerAddress
SHIN-ETSU CHEMICAL CO LTDCHIYODA-KU TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukuda, Satoru Annaka, JP 20 127
Watanabe, Toshiaki Annaka, JP 369 4832

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