We have fabricated the highly concentrated Nd:Gd3Ga5O12 single crystals, and investigated the spectroscopic properties of them. It was also found that Nd:Gd3Ga5O12 is essentially a disordered crystal, because all Gd3+ ions in Gd3Ga5O12 crystals could be replaced to Nd3+, such as Nd3Ga5O12.

© 2004 Optical Society of America

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