双折射
宽带
电介质
材料科学
极化(电化学)
光电子学
波长
圆极化
偏振旋转器
光学
物理
化学
微带线
物理化学
作者
Souvik Biswas,Meir Y. Grajower,Kenji Watanabe,Takashi Taniguchi,Harry A. Atwater
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2021-10-22
卷期号:374 (6566): 448-453
被引量:51
标识
DOI:10.1126/science.abj7053
摘要
Active polarization control is highly desirable in photonic systems but has been limited mostly to discrete structures in bulky dielectric media and liquid crystal–based variable retarders. Here, we report electrically reconfigurable polarization conversion across telecommunication wavelengths (1410 to 1575 nanometers) in van der Waals layered materials using tri-layer black phosphorus (TLBP) integrated in a Fabry-Pérot cavity. The large electrical tunability of birefringence in TLBP enables spectrally broadband polarization control. We found that polarization states could be generated over a large fraction of the Poincaré sphere through spectral tuning, and that electrical tuning enables the state of polarization conversion to span nearly half the Poincaré sphere. We observed both linear to circular and cross-polarization conversion with voltage, demonstrating versatility with a high dynamic range.
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