1 山东大学物理学院晶体材料国家重点实验室，山东 济南 250100
2 南开大学电子信息与光学工程学院微尺度光学信息基础科学重点实验室，天津 300350
3 山东师范大学物理与电子科学学院山东省光场调控工程技术中心，山东省光学与光子器件重点实验室，山东 济南 250358
利用飞秒激光直写技术制备Tm∶YAP光波导并实现1.9 μm波导调Q锁模激光输出。结合具有金属特性的NbSe2薄膜作为可饱和吸收元件进行光学调制，波导激光输出的激光脉冲重复频率为7.8 GHz，最短脉宽为62 ps。这也是已报道的从Tm∶YAP波导中获得的最短激光脉宽。通过调整泵浦光的偏振，可以获得1855.87/1892.54 nm的双波长激光输出。结果表明，具有金属特性的NbSe2薄膜在调制中红外超快脉冲激光器方面具有较大的应用价值。此外，双波长输出的紧凑型Tm∶YAP波导脉冲激光器在多功能集成光子学研究方面具有较好的应用前景。
激光器 飞秒激光直写 波导激光 Tm∶YAP NbSe2 光学学报
2023, 43(16): 1623018
1 山东大学物理学院 晶体材料国家重点实验室,山东 济南 250100
2 南开大学电子信息与光学工程学院 微尺度光学信息基础科学重点实验室, 天津 300350
作为三维超构材料的衍生物，具有亚波长厚度的人工超构表面结构能够在紧凑的平台上灵活操纵光与物质的相互作用，有利于多功能、超紧凑光子器件的研发，对于微纳光子学和集成光子学具有重要意义。铁电晶体铌酸锂凭借其跨越可见光至中红外波段的宽透明窗口以及较大的非线性光学、电光系数，被认为是最有前途的多功能集成光子平台之一。近年来，基于铌酸锂薄膜(lithium-niobate-on-insulator，LNOI)的集成光子学器件研究也得到了迅猛发展。本文总结了几种有潜力制备高质量铌酸锂超构表面的微纳加工技术，同时介绍了近年来铌酸锂超构表面结构的研究进展，并对其未来的研究方向进行了展望。
超构表面 铌酸锂 微纳加工 非线性光学 metasurface lithium-niobate micro-nanofabrication nonlinear optics 
Author Affiliations
Abstract
1 School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
2 Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
Lithium niobate () is a versatile crystalline material for various photonic applications. With the recent advances in -on-insulator (LNOI) thin film technology, has been regarded as one of the most promising platforms for multi-functional integrated photonics. In this work, we present the field enhancement due to collective resonances in arrayed nanoantennas. These resonances arise from the enhanced radiative coupling of localized Mie resonances in the individual nanoparticles and Rayleigh anomalies due to in-plane diffraction orders of the lattice. We describe the pronounced differences in field enhancement and field distributions for electric and magnetic dipoles, offering valuable information for the design and optimization of high-quality-factor optical metasurfaces based on .
integrated optics nanophotonics lithium niobate Mie theory Chinese Optics Letters
2021, 19(6): 060013
Author Affiliations
Abstract
1 Laboratory for Optical Systems, Department of Microsystems Engineering-IMTEK, University of Freiburg, 79110 Freiburg, Germany
2 School of Physics, State Key Laboratory of Crystal Materials, Key Laboratory of Particle Physics and Particle Irradiation (Ministry of Education), Shandong University, Jinan 250100, China
Over the last years, there has been tremendous progress with compact pulsed lasers based on various solid-state gain media, such as crystals and glasses doped with laser-active ions. With the integration of increasingly diverse saturable absorber materials, these small sources are capable of delivering stable pulses with durations as short as femtoseconds and repetition rates exceeding 10 GHz. These promising sources are known as solid-state waveguide lasers, which have become synonymous with miniaturization, integration, and functionality. This article overviews the progress in the development of passively Q-switched and mode-locked solid-state waveguide lasers employing diverse saturable absorbers. The most commonly used laser configurations, state-of-the-art waveguide fabrication techniques, and experimental demonstrations of pulsed waveguide lasers are summarized and reviewed. Selected well-noted topics, which may shape the future directions in this field, are also presented.
230.7370 Waveguides 140.5680 Rare earth and transition metal solid-state lasers 140.3540 Lasers, Q-switched Chinese Optics Letters
2019, 17(1): 012302
介电晶体光波导结合了波导紧凑型的结构和介电晶体的诸多优异性质，在集成光子学中具有广泛的应用。飞秒激光直写是一种有效的三维微纳精细加工技术，可以在多种透明光学材料中实现基于波导结构的微小型光子学器件的制备。综述了利用飞秒激光直写晶体/陶瓷材料光波导的制备、表征以及应用，并展望了飞秒激光写入晶体光波导研究的未来发展方向。
集成光学 光波导 飞秒激光直写 介电晶体 波导激光 倍频 激光与光电子学进展
2016, 53(1): 010001
