Third order nonlinear optical susceptibility for transparent tin oxide thin films
- 1 June 1992
- journal article
- Published by Taylor & Francis in Ferroelectrics
- Vol. 131 (1) , 111-117
- https://doi.org/10.1080/00150199208223400
Abstract
Third order nonlinear optical susceptibilities for transparent SnO2 thin films were examined by a combined study on both the experimental evaluation of X(3)(−3ω:ω, ω, ω) and theoretical analysis of the electronic structure. The X(3) of SnO2 thin film was evaluated to be about 10−12 esu from the measurement of the third harmonic generation. The origin of a large X(3) for SnO2 was interpreted as follows: the large mobility of optically excited electrons at the conduction band, which consists of spherically symmetric 5s orbital of Sn atoms, must contribute to the enlargement of dipole moment induced by optical excitation.Keywords
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