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Title: Temperature of broadband anti-Stokes white emission in LiYbP{sub 4}O{sub 12}: Er nanocrystals

The up-conversion emission of LiYb{sub 0.99}Er{sub 0.01}P{sub 4}O{sub 12} nanocrystals was investigated in vacuum upon the focused beam of infrared laser excitation. The intense white broad band emission was observed above the threshold power of 800 mW. An increase of excitation power results in enhancement of temperature of emitting nanocrystals. The temperature of nanocrystals was determined following the thermally equilibrated f-f emission transitions of Er{sup 3+} ions. The highest measured temperature of white emission was determined to be about 900 K. It is concluded that the black body radiation is not responsible for the white broad band emission.
Authors:
; ;  [1] ;  [2]
  1. Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wrocław (Poland)
  2. Institute Light Matter (ILM), UMR5306 CNRS-University Lyon1, University of Lyon, 69622 Villeurbanne (France)
Publication Date:
OSTI Identifier:
22310677
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 17; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; BEAMS; BLACKBODY RADIATION; CONVERSION; EMISSION; ERBIUM ADDITIONS; EXCITATION; LASER RADIATION; LITHIUM COMPOUNDS; NANOSTRUCTURES; PHOSPHATES; RAMAN SPECTROSCOPY; VISIBLE RADIATION; YTTERBIUM COMPOUNDS