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- W3190389640 abstract "ABSTRACT We demonstrated a novel ultraviolet random lasing in a diamond nanoparticle film , in which above the threshold, several sharp peaks appeared at the center of spontaneous emission around 38 0 nm. In order to improve th e lasing properties, we measured the annealing temperature dependence to examine the influence of the sp 2 layer on the surface of diamond nanoparticles, which was considered to quench the emission from a diamond body (sp 3 diamond) . From the results, we fou nd that UV random lasing was able to observe in a diamond nanoparticle film when the annealing temperature was from 400 to 700 U&DOWKRXJKWKHODVLQJZDVKDUGWRREVHUYHZKHQWKHDQQHDOLQJWHPSHUDWXUHZDVEHORZU& However, regardless of annealing temperature (above 400 U& ), UV random lasing properties did not change, in which random lasing peaks clearly concentrated around t he center of spontaneous emission and their thresholds were dispersed from several tens to several hundred MW/cm 2 . These results suggest that annealing at suitable temperature is important to induce UV random lasing, whereas random lasing properties (lasin g wavelength, lasing threshold) do not change even if annealing temperature change from 400 to 700 U& Keywords: Random l aser , Diamond nanoparticles , Ultraviolet , Multiple light scattering" @default.
- W3190389640 created "2021-08-16" @default.
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- W3190389640 date "2015-01-01" @default.
- W3190389640 modified "2023-09-26" @default.
- W3190389640 title "Annealing temperature dependence of random lasing properties in a diamond nanoparticle film" @default.
- W3190389640 hasPublicationYear "2015" @default.
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