Degree of IR laser thermal effect on high temperature superconducting samples

Emma N. Lotkova; Sergey D. Zotov; Eugene M. Kudriavtsev; B. H. Makeev

doi:10.1117/12.204884

31 March 1995 Degree of IR laser thermal effect on high temperature superconducting samples

Emma N. Lotkova, Sergey D. Zotov, Eugene M. Kudriavtsev, B. H. Makeev

Proceedings Volume 2502, Gas Flow and Chemical Lasers: Tenth International Symposium; (1995) https://doi.org/10.1117/12.204884
Event: Gas Flow and Chemical Lasers: Tenth International Symposium, 1994, Friedrichshafen, Germany

Abstract

The temperature of the high temperature superconducting (HTSC) sample surface, T, irradiated by the c.w. IR CO-laser was measured by the pyrometric method. The YBa₂Cu₃O₇ single crystals, YBa₂Cu₃O_6.2, YBa₂Cu₃O_6.9, and the Nd_1.85Ce_0.15CuO₄ ceramic samples were studied. The experimental data were compared with the theoretical estimations. The verified values of the heat conductivity, k, were derived from this comparison. Using these k values, the T data for the case of the pulse laser irradiation obtained in our previous investigations of laser irradiation effects were refined. The results of the present work confirmed that effects of the IR laser irradiation seen in our previous works cannot be explained by pure thermal action as the degree of the IR laser thermal effects, i.e., the heating, is relatively small in that experiments, and the T values are lower than it is needed for appreciable changes in properties of the HTSC samples being under consideration.

Citation Download Citation

Emma N. Lotkova, Sergey D. Zotov, Eugene M. Kudriavtsev, and B. H. Makeev "Degree of IR laser thermal effect on high temperature superconducting samples", Proc. SPIE 2502, Gas Flow and Chemical Lasers: Tenth International Symposium, (31 March 1995); https://doi.org/10.1117/12.204884

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