DataVXACS Applied Materials & InterfacesPaper
journal article·2020-06-22Open access

Tunable Grain Orientation of Chalcogenide Film and Its Application for Second Harmonic Generation

Yun Meng, Jitendra K. Behera, Shancheng Wang, Minghui Jiang, Jincheng Lin, Jingsong Wei, Yang Wang, Tun Cao, Yi Long

ACS Applied Materials & Interfaces
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Source abstract

Abstract

To date, the second harmonic generation (SHG) has a great effect on photonic devices. However, it is a formidable challenge to achieve reconfigurable SHG. Hereby, we experimentally demonstrate the SHG response from the oriented Ge2Sb2Te5 (GST) grains induced by polarized laser pulses for the first time. The orientation of GST grains is found to be perpendicular to the polarization direction of the pump laser. Such unique ordered structures result in a periodic change of SHG intensity with the input polarization angle of the pump laser rotating every 180°. These findings may pave avenues for generating nonlinear optical sources with a simple process, scalability, and switchable functionality.
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Research context

OpenAlex topics: Photonic and Optical Devices · Phase-change materials and chalcogenides · Photonic Crystals and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laboratory of Micro-Nano Optoelectronic Materials and Devices, Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Science, Beijing 100080, China

School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore

School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian, 116024, China

Funding

Ministry of Science and Technology of the People's Republic of China · National Research Foundation Singapore · National Natural Science Foundation of China

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