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- 分享 超高性价比的光束质量分析仪
- Thoelab公司生产的光束质量分析仪具有超高性价比，是科研和工业客户测量光束质量的完美选择。 产品特点： 1：体积小巧，测量M2整体尺寸不超过50cm长。 2：测量时间迅速，测量时间不超过40秒 3：具有实时显示激光功率功能 4：可测激光功率范围大，可测10nW-10W的功率 5：可测连续和脉冲激光，脉冲激光最低重复频率可达10Hz ...
- 分享 美开发出利用激光分离细胞新系统
- 美国麻省理工学院利用造价低廉的激光开发出一种从样品中分离某些细胞的新系统。该系统能在普通的玻璃载玻片上分离出1万多种细胞，这将有助于研究人员轻松完成许多在以前看来不可能的生物实验。而且，与其他细胞分离方法相比，该系统分离速度快、操作简单且价格便宜。这一研究结果刊登在12月15日的《分析化学杂志》上。 ...
- 分享 世界最大射电望远镜面临关闭
- 据国外媒体报道，在波多黎各的群山密林里，300英尺高的铁塔上的粗壮钢索吊起一排排天线，下面是一个直径1000英尺(305 米)的“铝锅”，象一只硕大无比的眼睛瞪着太空。它就是世界上最大最敏感的单碟射电望远镜——阿雷西沃望远镜。从高空看去，它就象外星人修建的一个秘密据点。事实上，它的任务是为了寻找银河系边缘智能生 ...
- 分享 ULTRAFAST TECHNOLOGY: 3-D movie shows femtosecond pulse propagation
- For the first time, three-dimensional (3-D) images of femtosecond light-pulse propagation have been observed and recorded by researchers at the Kyoto Institute of Technology (Kyoto, Japan). 1 The continuously moving pictures are produced using holographic light-in-flight techniques and enable the ...
- 分享 TERAHERTZ GENERATION: Near-IR lasers may close the terahertz gap
- Two laser-based approaches to terahertz generation-one using near-IR distributed-feedback diodes and the other using femtosecond lasers-may open up the terahertz region to more widespread use in imaging, spectroscopy, and communications. ANSELM DENINGER AND THOMAS RENNER In seafa ...
- 分享 ATTOSCIENCE: Photonic-crystal fiber produces attosecond pulses
- A team of physicists has reported using a photonic-crystal fiber to manipulate light a million times more efficiently than previously known possible. The team consisted of physicists from the University at Bath (Bath, England), the Technical University of Denmark (Lyngby, Denmark), and the Universi ...
- 分享 Fiber Bragg gratings switch in nanoseconds
- High-speed switching or tuning of light in fiber Bragg gratings (FBGs) can be applied to Q-switching, cavity dumping, and pulse picking in a fiber laser, among other applications. Although many options have been used such as bending beams, stretching light with a piezoelectric stack, and using magn ...
- 分享 SPIE Photonics West will move to San Francisco in 2010
- SPIE Photonics West will move from San Jose to San Francisco in 2010, SPIE Senior Director of Events and Global Services Janice Walker announced. The decision to move to Moscone Center was prompted by the announcement of plans to remodel the San Jose Convention Center, and by the continuing expans ...
- 分享 IPG Photonics reports thick-plate welding results with 20-kW fiber laser
- December 12, 2007, Dublin, Ireland --IPG Photonics announced that its application center in Germany achieved record high-quality deep-penetration welding on thick stainless steel plates at rapid speeds. By using IPG's 20-kW continuous wave 1070-nm commercial fiber laser, the company says it is ...
- 分享 红外探测器正瞄准长波长应用
- 作者：Omer Gokalp Memis，Hooman Mohseni 得益于来自人眼杆状细胞方面的灵感，聚焦载流子增强传感器实现了将大面积高效吸收层与纳米探测机制相结合。 红外光谱通常能提供超出人眼视觉范围的观察能力。红外探测器已在许多应用中发挥着重要作用，特别是在从不同角度观察物体的较不明显特征方面，红外探测器已经成为不可 ...
