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High-efficiency resonantly pumped room temperature Ho: Y V O 4 laser

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Abstract

An efficient 2μm room temperature Ho:YVO4 laser resonantly pumped by a 1.94μm Tm:YAP laser is demonstrated, for the first time to our knowledge, in this Letter. Up to 8.58W of laser output at 2053nm is obtained with the optical-to-optical conversion efficiency as much as 41.2%. The output beam had quality of M2 factor with Mx2 of 3.58 and My2 of 1.76 at 8W output level. In addition, we also obtained 4.18W laser output at 2066nm and 7.04W at 2040nm from the Ho:YVO4 laser with conversion efficiency of 27.8% and 33.8%, respectively.

© 2011 Optical Society of America

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