NON-LINEAR OPTIC POLARIZATION IN LITHIUM SULPHATE MONOHYDRATE CRYSTALS |
| Z. Czapla, M. Dębska Institute of Experimental Physics, University of Wrocław, Pl. M. Borna 9, 50-204 Wrocław, Poland E. Lebedeva and A. Pirozerski Institute of Physics, Saint-Petersburg State University, Ulyanovskaya str. 1, 198904 Saint-Petersburg, Russia |
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| Received: August 25, 2000; revised version February 5, 2001 |
| The "steady-state" non-linear optic polarization arising in lithium sulphate monohydrate crystals under the influence of the short pulse laser irradiation has been investigated in the temperature range of 95 - 305 K. The reversal of the sign of the components of the generalised non-linear susceptibility tensor χ has been found at about 105 K. The change of the photoresponse kinetics and a drastic temperature dependence of the components χijk in the temperature range of 95 - 105 K, as well as the change of the spectral dependence of the photoresponse were observed. |
| DOI: 10.12693/APhysPolA.99.539 PACS numbers: 42.65.-k, 72.40.+w, 77.70.+a, 77.80.-e |