On Influence of Temperature and Doped Concentrations on the Frequency Conversion Efficiency in Erbium-Doped Zinc Oxide Films
American Journal of Optics and Photonics
Volume 4, Issue 6, December 2016, Pages: 57-63
Received: Nov. 6, 2016;
Accepted: Nov. 23, 2016;
Published: Jan. 13, 2017
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Rena J. Kasumova, Physics Department, Baku State University, Baku, Azerbaijan
S. R. Figarova, Physics Department, Baku State University, Baku, Azerbaijan
Sh. Sh. Amirov, Department of Electronics, Telecommunications and Radio Engineering, Khazar University, Baku, Azerbaijan
G. A. Safarova, Physics Department, Baku State University, Baku, Azerbaijan
N. N. Heydarov, Physics Department, Baku State University, Baku, Azerbaijan
The effect of different concentrations of erbium as the doping element with different values of the temperature on the nonlinear optical properties of ZnO films was considered. Analytical analysis was carried out with the consideration of phase effects accompanying the study process. For this purpose, the constant intensity approximation was used. The analytical method also allows us to estimate the effect of impurities on the nonlinear optical properties of films by method of the third harmonic generation and the maximum value of the intensity of the third harmonic in pure and doped by erbium ZnO films. It is possible to calculate for specific values of the pump intensity the coherent length of a nonlinear frequency converter. Analytical analysis indicates that the increase in intensity of the third harmonic in the vicinity of the coherence length values offset by significant losses taking place at such high order, the interaction lengths 600 nm. It is shown that that the introduction of erbium the intensity of the third harmonic is significantly increased. This occurs when the surface of the samples has the lowest degree of roughness when there is a delocalization of the excitons. With increasing impurity of erbium greater than 2% the surface becomes porous, increasing the surface roughness of the obtained samples.The proposed method of increasing the efficiency of the process is to improve the technology of production of films with small losses.
Rena J. Kasumova,
S. R. Figarova,
Sh. Sh. Amirov,
G. A. Safarova,
N. N. Heydarov,
On Influence of Temperature and Doped Concentrations on the Frequency Conversion Efficiency in Erbium-Doped Zinc Oxide Films, American Journal of Optics and Photonics.
Vol. 4, No. 6,
2016, pp. 57-63.
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