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2 May 2014 Multipolar second-harmonic generation from films of chalcogenide glasses
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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.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. Slablab, K. Koskinen, R. Czaplicki, N. Thachan Karunakaran, I. Sebastian, C. Pradeep Chandran, M. Kailasnath, P. Radhakrishnan, and M. Kauranen "Multipolar second-harmonic generation from films of chalcogenide glasses", Proc. SPIE 9126, Nanophotonics V, 912621 (2 May 2014);

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