Multipolar second-harmonic generation from films of chalcogenide glasses

被引：1

作者：

Slablab, A. ^{[1
]}

Koskinen, K. ^{[1
]}

Czaplicki, R. ^{[1
]}

Karunakaran, N. Thachan ^{[2
]}

Sebastian, I. ^{[2
]}

Chandran, C. Pradeep ^{[2
]}

Kailasnath, M. ^{[2
]}

Radhakrishnan, P. ^{[2
]}

Kauranen, M. ^{[1
]}

机构：

[1] Tampere Univ Technol, Dept Phys, POB 692, FIN-33101 Tampere, Finland

[2] Cochin Univ Sci & Technol, Int Sch Photon, Kochi 682022, Kerala, India

来源：

NANOPHOTONICS V | 2014年 / 9126卷

基金：

芬兰科学院;

关键词：

Second-harmonic generation; tensor components; chalcogenide glasses; thin film; OPTICAL-PROPERTIES; SURFACE; BULK;

D O I：

10.1117/12.2051477

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Chalcogenide glasses are amorphous semiconductors with a number of interesting properties required for photonic devices. Particularly, their optical properties can be tuned through the change of the glass composition. We investigate second-order nonlinear optical properties of chalcogenide glass (Ge27Se64Sb9) thin films fabricated by thermal evaporation. The strong second-harmonic generation observed for the samples investigated is analyzed as a function of incident polarization. Furthermore, the role of multipole effects in second-harmonic generation is also studied by using two beams at the fundamental frequency. Our results suggest that the higher-multipole effects are present and contribute significantly to the second-harmonic response of chalcogenide the samples.

引用

页数：7

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