Studies of upconversion emission of Yb3+, Er3+:Lu2O3 nanoceramics

• Published in: Optical materials 2013-02, Vol.35 (4), p.731-734
• Main Authors: Gluchowski, P., Strek, W.
• Format: Article
• Language: English
• Subjects: Cross-disciplinary physics: materials science; rheology; Emission analysis; Erbium; Exact sciences and technology; Excitation; Frequency conversion; harmonic generation, including high-order harmonic generation; Fundamental areas of phenomenology (including applications); Heating; Laser diodes; Lu2O3; Materials science; Nanoceramic; Nanocomposites; Nanomaterials; Nanoscale materials and structures: fabrication and characterization; Nanostructure; Nonlinear optics; Optical materials; Optics; Other topics in nanoscale materials and structures; Physics; Upconversion; Ytterbium
• ISSN: 0925-3467; 1873-1252
• DOI: 10.1016/j.optmat.2012.08.020

► The translucent Yb3+ and Er3+ doped Lu2O3 ceramics composed of nanocrystalline grains were sintered. ► Significant difference in UC spectra measured for nanocrystalline powder and nanoceramic was found. ► The intensity ratio of the anti stokes transitions allows to determine the temperature of the nanoceramic. ► Measurement of intensity ratio of the UC bands in the nanoceramic may be applied in thermometry. The translucent Yb3+ and Er3+ doped Lu2O3 ceramics composed of nanocrystalline grains were sintered using a low temperature and high pressure method. The upconversion emission associated with the 2H11/2→4I15/2, 4S3/2→4I15/2 (green), 4F9/2→4I15/2 (red) and 4I9/2→4I15/2 (IR) transitions was observed upon intense infrared laser excitation. The dependence of the upconversion intensity on incident laser diode power in Yb3+, Er3+:Lu2O3 nanoceramics was investigated. In particular it was found that the green/red intensity ratio of upconversion transitions increased with the power of the incident laser light. This effect was due to heating of the nanoceramics with increasing excitation power and may be utilized for high temperature thermometry.