Jianlang He, Haiwei Chen, Kaiyan Pan, Yawen Su, Xinyu Zhang, Wei Li, Shi-Ning Zhu, Xiaopeng Hu
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引用次数: 0
摘要
绝缘体上的铌酸锂(LNOI)已成为下一代集成光子学的理想候选材料,并正朝着在单个芯片上集成多功能元件的方向发展。在这封信中,我们展示了一种多功能 LNOI 光子芯片,其中包含频率上变频和光电探测功能。通过对 x 切 LNOI 进行周期性极化,实现了高效的二次谐波生成,将近红外线转换为可见光,归一化转换效率为 1350%W-1 cm-2。随后,通过将非晶硅与 LNOI 异质集成,实现了对转换红光的片上检测,LNOI 的暗电流低,在 4 V 偏置电压下的响应率为 95 mA/W。这些结果为基于 LNOI 平台异质集成的片上频率上转换和检测提供了概念验证,并将为实现紧凑、可靠、高效的经典和量子信息处理铺平道路。
Heterogeneously Integrated Lithium Niobate on Insulator Chip for Frequency Up-Conversion and Detection
Lithium niobate on insulator (LNOI) has emerged as a promising candidate for next-generation integrated photonics and is moving toward the integration of multifunctional components on a single chip. In this letter, we demonstrate a multifunction LNOI photonic chip, which contains frequency up-conversion and photodetection. Efficient second harmonic generation, which converts the near-infrared to the visible, was realized by periodical poling of the x-cut LNOI, and the normalized conversion efficiency was 1350%W–1 cm–2. Subsequent on-chip detection of the converted red light was made possible by heterogeneously integrating amorphous silicon with LNOI, which features a low dark current and a responsivity of 95 mA/W with a 4 V bias voltage. The results provide a proof of concept for on-chip frequency up-conversion and detection based on heterogeneous integration in the LNOI platform and will pave the way toward compact, reliable, and efficient classical and quantum information processing.
期刊介绍:
Published as soon as accepted and summarized in monthly issues, ACS Photonics will publish Research Articles, Letters, Perspectives, and Reviews, to encompass the full scope of published research in this field.