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| 1 | Femtosecond laser 3D fabrication of whispering-gallerymode microcavities显示文摘Whispering-gallery-mode(WGM) microcavities with high-quality factors and small volumes have attracted intense interests in the past decades because of their potential applications in various research fields such as quantum information, sensing, and optoelectronics. This leads to rapid advance in a variety of processing technologies that can create high-quality WGM micro-cavities. Due to the unique characteristics of femtosecond laser pulses with high peak intensity and ultrashort pulse duration, femtosecond laser shows the ability to carry out ultrahigh precision micromachining of a variety of transparent materials through nonlinear multiphoton absorption and tunneling ionization. This review paper describes the basic principle of femtosecond laser direct writing, and presents an overview of recent progress concerning femtosecond laser three-dimensional(3D) fabrications of optical WGM microcavities, which include the advances in the fabrications of passive and active WGMs microcavities in a variety of materials such as polymer, glass and crystals, as well as in processing the integrated WGM-microcavity device. Lastly, a summary of this dynamic field with a future perspective is given. | XU HuaiLiang SUN HongBo | 2015 | Science China(Physics,Mechanics & Astronomy)2015，58，11： | 5 |
| 2 | 新时期超快化学的发展态势及对策建议显示文摘在始于20世纪末的超快化学发展趋势研究基础上,为准确判断超快化学领域的发展态势,加快构建我国超快化学发展新格局,基于Web of Science数据库中的超快化学相关文献以及有关科技规划、基金项目、科技报告等多源数据,利用文献计量的方法和CiteSpace软件的突现探测算法,以知识图谱的形式展示1969年以来超快化学论文按学科类别的发文时间分布以及出现频次的变化趋势,并从论文增长趋势、全球竞争格局、研究水平与地区生产总值等多个角度分析研究前沿方向、热点主题等发展态势。结果发现:超快化学相关论文数量与国家经济发展水平高度相关;2011年起超快化学研究进入第2个快速发展期,其中环境、能源等人类社会重大发展问题成为超快化学的前沿领域,新型纳米材料、太阳能电池与氧化物的研究是超快化学的研究热点;美国、亚洲、欧洲的领域研究实力基本相当,发展重点基本分布在基础研究、应用研究、激光技术、大科学装置等方面。基于此,提出我国要持之以恒加大研发投入,加快打造高水平科研平台,引导超快化学的发展切实服务于国家宏观发展战略。 | 蒿巧利 王艳梅 赵晏强 张嵩 | 2023 | 科技管理研究2023，43，8： | 0 |
| 3 | Carrier-envelope phase passively stabilized near-infrared laser pulses from a dual-frequency pumped noncollinear optical parametric amplifier显示文摘By inversing the signal and idler in a two-stage noncollinear optical parametric amplifier which is,respectively,pumped by the second harmonic and fundamental wave of femtosecond Ti:sapphire laser at repetition rate of1 kHz,the carrier-envelope phase(CEP)passively stabilized pulses with a tunable wavelength from 1.1 to 1.6 lm are obtained with maximum energy of 95 lJ at 1.3 lm under the pump energy of 500 lJ.The CEP jitter of pulses is 108 mrad measured by an f-2f interferometer.This work demonstrates a new way to efficiently generate tunable near-infrared femtosecond laser pulses with self-stabilized CEP. | Shuyan Guo Weijun Ling Hao Teng Wei Zhang Lifeng Wang Zhiyi Wei | 2014 | Chinese Science Bulletin2014，59，10： | 0 |
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