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Investigation of the mode splitting induced by electro-optic birefringence in a vertical-cavity surface-emitting laser by polarized electroluminescence |
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| Authors: | Zhang Jie Yu Jin-Ling Cheng Shu-Ying Lai Yun-Feng Chen Yong-Hai |
| Institution: | a College of Physics and Information Engineering, and Institute of Micro/Nano Devices and Solar Cells, Fuzhou University, Fuzhou 350108, China;b Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China |
| Abstract: | The mode splitting induced by electro-optic birefringence in a P–I–N InGaAs/GaAs/AlGaAs vertical-cavity surface-emitting laser (VCSEL) has been studied by polarized electroluminescence (EL) at room temperature. The polarized EL spectra with E‖110] and E‖110] directions, are extracted for different injected currents. The mode splitting of the two orthogonal polarized modes for a VCSEL device is determined, and its value increases linearly with the increasing injected current due to electro-optic birefringence. This article demonstrates that the polarized EL is a powerful tool to study the mode splitting and polarization anisotropy of a VCSEL device. |
| Keywords: | mode splitting electro-optic birefringence vertical-cavity surface-emitting laser polarized electroluminescence |
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