搜索结果: 16-30 共查到“国际动态 激光物理”相关记录77条 . 查询时间(1.783 秒)
激光单色性新世界纪录诞生
激光单色性 频率 波长
2017/7/4
德国和美国科学家联合创造出了谱线宽度仅10毫赫兹（1毫赫兹为0.001赫兹）的激光，创下激光单色性的新世界纪录。
德国联邦物理技术研究院发布的新闻公报说，这是迄今离理想单色性最近的激光，用它测量原子频率可以让光子钟更加精确，还有助于光谱学和射电天文学研究等。
频率和波长决定着光的颜色，阳光由许多不同频率的光组成，分解后可以形成彩虹。光的频率越单一，单色性越好，在光谱上所占的区域越狭窄。理想的激...
Science fiction is full of fanciful devices that allow light to interact forcefully with matter, from light sabers to photon-drive rockets. In recent years, science has begun to catch up; some results...
1 billion suns:World’s brightest laser sparks new behavior in light
1 billion suns World’s brightest laser sparks in light
2017/7/24
By focusing laser light to a brightness 1 billion times greater than the surface of the sun — the brightest light ever produced on Earth — the physicists have observed changes in a vision-enabling int...
激光偏振检测可知太空垃圾成分
激光偏振检测 太空垃圾 美国麻省理工学院
2017/6/22
美国麻省理工学院（MIT）的工程师最近开发出一种激光偏振检测新技术，不仅能确定太空垃圾位置，还能分析其成分。
在地球空间轨道上，数以亿计的太空垃圾高速旋转着，给航天器和卫星带来巨大威胁。目前，美国国家航空航天局（NASA）和国防部在用陆基望远镜和激光雷达（Ladars）跟踪17000块碎片，但这一系统只能确定目标的位置。研究人员指出，新技术能分析出一块残骸由什么组成，有助于确定其质量、动量及可能...
'Lossless' metamaterial could boost efficiency of lasers and other light-based devices
Lossless metamaterial lasers other light-based devices
2017/3/14
Engineers at the University of California San Diego have developed a material that could reduce signal losses in photonic devices. The advance has the potential to boost the efficiency of various ligh...
New Laser Based on Unusual Physics Phenomenon Could Improve Telecommunications,Computing and More
New Laser Based Unusual Physics Phenomenon Could Telecommunications Computing
2017/2/16
Researchers at the University of California San Diego have demonstrated the world’s first laser based on an unconventional wave physics phenomenon called bound states in the continuum. The technology ...
水与光相互作用首次发出激光（图）
水 光 相互作用 激光
2016/12/1
2016年11月29日，该校研究人员首次通过实验证明，水与光相互作用也能发出激光，在之前被认为毫无关联的两个研究领域间构建起“桥梁”。全新的“水—波激光”可用来研制包含光波、声波和水波的微型传感器，或制作微流体“芯片实验室”装置，用于细胞生物学研究和检测新药。普通激光的形成过程是，原子内电子吸收外来能量后被激活，以激光形式发出辐射。而以色列理工学院机械工程学院光子力学中心主任塔尔·卡蒙的团队首次证...
激光首拍9飞秒内分子分解过程有助于更好理解和控制化学反应
激光首拍9飞秒 分子分解过程 理解 控制化学反应
2016/11/1
据美国科学促进会网站近日报道，美国堪萨斯州立大学和西班牙巴塞罗那科学技术研究所（BIST）科学家组成的国际研究团队，首次用激光成功拍摄出含4个原子的分子在9飞秒内化学反应动态过程。这一发表在《科学》杂志上的最新研究将为科学家提供有力工具，以观察化学、生物学和物理学等领域不同类型的反应过程和分子变化。
JILA’s Superradiant Laser May One Day Boost Atomic Clocks and ‘Rulers’ for Space
JILA Superradiant Laser Atomic Clocks Rulers Space
2016/11/4
JILA physicists have demonstrated a novel laser design based on synchronized emissions of light from the same type of atoms used in advanced atomic clocks. The laser could be stable enough to improve ...
UMD Physicists Discover “Smoke Rings” Made of Laser Light（图）
UMD Physicists Smoke Rings Laser Light
2016/9/29
Most basic physics textbooks describe laser light in fairly simple terms: a beam travels directly from one point to another and, unless it strikes a mirror or other reflective surface, will continue t...
Lasers have become indispensable to modern life since they were invented more than fifty years ago. The ability to generate and amplify light waves into a coherent, monochromatic and well-focused beam...
激光新技术使石墨烯工业化成为可能
激光 石墨烯工业化
2015/8/10
西班牙AIMEN技术中心的研究人员日前展示了使用超高速激光加工石墨烯材料的新技术，它使得大规模加工生产石墨烯成为可能。有关研究论文发表在《应用物理快报》上。石墨烯具有独特的电子和光学特性，其工业化生产可能会带来一个快速、可靠、低功耗通信和信息处理的新时代。但目前有两大问题阻碍了石墨烯产品的广泛应用：首先，工业生产中没有成熟的技术可用于大规模生产具有特殊性能的石墨烯；其次，用于硅基处理的传统固态技术...
Turning loss to gain: Cutting power could dramatically boost laser output（图）
laser Cutting power
2014/12/1
Lasers — devices that deliver beams of highly organized light — are so deeply integrated into modern technology that their basic operations would seem well understood. CD players, medical diagnostics ...
Turning loss to gain: Cutting power could dramatically boost laser output
Cutting power dramatically boost laser output
2014/10/30
Lasers — devices that deliver beams of highly organized light — are so deeply integrated into modern technology that their basic operations would seem well understood. CD players, medical diagnostics ...
应“理化青年论坛”、中国科学院青年创新促进会理化技术研究所分会和中国科学院光化学转换与功能材料重点实验室邀请，日本大阪大学Hiromi Yamashita教授9月3日访问中国科学院理化技术研究所，并作题为Design and Applications of Nanostructured Photocatalysts and Catalysts Using Well-Defined Nanospac...