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The laser properties of the Nd:YGG crystal are investigated. The absorption spectrum from 500 to 900nmand emission spectrum from 850 to 1400 nm of Nd:YGG are measured. As much as 1.35W output power of fundamental laser operating at 935 and 938nm with a slope efficiency of 15.7% and 105 mW output power of frequency doubled blue laser are successfully obtained.