Journal
OPTICS EXPRESS
Volume 23, Issue 11, Pages A519-A524Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.23.00A519
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- Advanced Low Carbon Technology Research and Development Program (ALCA) of Japan Science and Technology Agency (JST)
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We report energy transfer efficiency from Cr3+ to Nd3+ in Nd (1.0 at.%)/Cr (0.4 at.%) co-doped Y3Al5O12 (YAG) transparent ceramics in the laser oscillation states. The laser oscillation has performed using two pumping lasers operating at 808 nm and 561 nm; the former pumps Nd3+ directly to create the 1064 nm laser oscillation, whereas the latter assists the performance via Cr3+ absorption and sequential energy transfer to Nd3+. From the laser output power properties and laser mode analysis, the energy transfer efficiency was determined to be around 65%, which is close to that obtained from the spontaneous Nd3+ emission. (C) 2015 Optical Society of America
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