Strong Wavelength Dependence of Laser Ablation Fragments of Superconductor YBa 2 Cu 3 O y

In addition to the two groups of radiative fragments which have previously been described, two groups of nonradiative fragments are first observed in laser-ablated fragments of YBa 2 Cu 3 O y , using a space/time-resolved optical transmittance measurement. The average velocities of the nonradiative...

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Published inJapanese Journal of Applied Physics Vol. 31; no. 2A; p. L86
Main Authors Eryu, Osamu, Murakami, Kouichi, Masuda, Kohzoh, Shihoyama, Kazuhiko, Mochizuki, Takayasu
Format Journal Article
LanguageEnglish
Published 01.02.1992
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Summary:In addition to the two groups of radiative fragments which have previously been described, two groups of nonradiative fragments are first observed in laser-ablated fragments of YBa 2 Cu 3 O y , using a space/time-resolved optical transmittance measurement. The average velocities of the nonradiative fragments (2×10 5 cm/s and 2×10 4 cm/s) are much lower than those of the radiative fragments (5×10 6 cm/s and 1×10 6 cm/s). The yield of the nonradiative fragments increases with increasing laser wavelength, while that of the radiative fragments is nearly wavelength independent.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.31.L86