Study of linear optical properties and two-photons absorption in Zn1-xMgxSe thin layers

被引：33
作者：
Derkowska, B
Sahraoui, B
Phu, XN
Glowacki, G
Bala, W
机构：
[1] Univ Angers, EP CNRS 30, Lab Proprietes Opt Mat & Applicat, POMA, F-49045 Angers 01, France
[2] Nicholas Copernicus Univ, Inst Phys, PL-87100 Torun, Poland
来源：
OPTICAL MATERIALS | 2000年 / 15卷 / 03期
关键词：
two-photon absorption; nonlinear optics; Zn1-xMgxSe thin layers;
D O I：
10.1016/S0925-3467(00)00036-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Reflection spectroscopy is used to obtain the refractive index of Zn1-xMgxSe layers for the series of alloy composition x, at energies below the energy gap of these semiconductors. It is shown that the linear refractive indices decrease with Mg content. The two-photon absorption coefficient (beta) was obtained from the nonlinear transmission. A relatively strong nonlinear absorption, which increases with an increase of Mg composition, is observed. Maximal value of the TPA coefficient is obtained for the Mg content about 40%. The technological figure of merit parameter Im(chi ([3]))/alpha shows evident maximum for Mg content at 7%. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：199 / 203
页数：5
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