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| 1 | Advances in on-chip photonic devices based on lithium niobate on insulator显示文摘Crystalline lithium niobate(LN)is an important optical material because of its broad transmission window that spans from ultraviolet to mid-infrared and its large nonlinear and electro-optic coefficients.Furthermore,the recent development and commercialization of LN-on-insulator(LNOI)technology has opened an avenue for the realization of integrated on-chip photonic devices with unprecedented performances in terms of propagation loss,optical nonlinearity,and electro-optic tunability.This review begins with a brief introduction of the history and current status of LNOI photonics.We then discuss the fabrication techniques of LNOI-based photonic structures and devices.The recent revolution in the LN photonic industry has been sparked and is still being powered by innovations of the nanofabrication technology of LNOI,which enables the production of building block structures,such as optical microresonators and waveguides of unprecedented optical qualities.The following sections present various on-chip LNOI devices categorized into nonlinear photonic and electro-optic tunable devices and photonic-integrated circuits.Some conclusions and future perspectives are provided. | JINTIAN LIN FANG BO YA CHENG JINGJUN XU | 2020 | Photonics Research2020，8，12： | 26 |
| 2 | 铌酸锂强场太赫兹光源及其应用显示文摘高能强场太赫兹(THz)激光在量子材料物态调控、全光电子加速、生物医疗等方面拥有重要的应用价值。高效率、高光束质量、高稳定性(简称“三高”)的强场THz光源的缺乏极大阻碍了强场THz科学与应用的发展。基于飞秒激光抽运铌酸锂晶体通过倾斜波前技术产生高能强场THz辐射是突破上述“三高”强场THz光源的有效途径之一。回顾了铌酸锂倾斜波前技术的发展历程,从理论原理、实验方法、应用实例等三个方面综述了国内外铌酸锂强THz源及其应用现状,阐述了北京航空航天大学近五年与国内外高校院所合作实现的铌酸锂THz强源及其应用重要进展。 | 吴晓君 任泽君 孔德胤 郝思博 代明聪 熊虹婷 李培炎 | 2022 | 中国激光2022，49，19： | 9 |
| 3 | Double-slit diffraction of terahertz wave generated by tilted-pulse-front pumping显示文摘We propose a spatial diffraction diagnostic method via inserting a millimeter-gap double slit into the collimated terahertz beam to monitor the minute variation of the terahertz beam in strong-field terahertz sources,which is difficult to be resolved in conventional terahertz imaging systems.To verify the method,we intentionally fabricate tiny variations of the terahertz beam through tuning the iris for the infrared pumping beam before the tilted-pulse-front pumping setups.The phenomena can be well explained by the theory based on the tilted-pulse-front technique and terahertz diffraction. | 李尚卿 马景龙 吴晓君 张保龙 欧阳琛 王天泽 王丹 王瑄 李玉同 | 2021 | Chinese Optics Letters2021，19，5： | 1 |
| 4 | 基于发光二极管的强场太赫兹相机显示文摘报道了一种基于发光二极管(LED)的强脉冲场太赫兹相机,其工作原理是皮秒脉宽的强场太赫兹辐照到LED之后,当太赫兹电场强度大于50 kV/cm时,由于碰撞电离效应,LED两端会产生纳秒脉宽的光伏信号。利用此效应成功制备了扫描式和阵列式的LED太赫兹相机,并捕捉到了由铌酸锂倾斜波前技术产生的强场太赫兹焦斑。该相机有成本低、信号强、响应快、成像面积大等特点,并会为发展基于强场非线性效应的太赫兹成像技术提供新思路。 | 李尚卿 欧阳琛 马景龙 张保龙 吴晓君 徐继红 李玉同 | 2021 | 光学学报2021，41，24： | 0 |
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