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The intense anti-Stokes white emission of Li(K)P 4 O 12 crystals was observed in vacuum under 808nm excitation. Influence of optical pumping power and ambient pressure on up-conversion properties have been investigated. It was found that intense white anti-Stokes white emission occurred at vacuum atmosphere. Its origin has been discussed in terms of Nd 2+ -charge transfer luminescence...
Upconversion emission of Nd 3+ doped LiLa 1−x Nd x P 4 O 12 nanocrystals powders upon irradiation with 808nm laser diode has been investigated. This emission of bright orange color was dependent on concentration and excitation incident light intensity. It was found that this emission was threshold phenomenon characterized by long build-up times which were...
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