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Real-time,continuous-wave terahertz imaging by a pyroelectric camera
作者: 杨珺, 阮双琛, 张敏 主题: 年份: 2008
摘要: <正>real-time,continuous-wave terahertz(thz)imaging is demonstrated.a 1.89-thz optically-pumped far- infrared laser is used as the illumination source,and a 124×124 element room-temperature pyroelectric camera is adopted as the detector.with this setup,thz images through various wrapping materials are shown.the results show that this imaging system has the potential applications in real-time mail and security inspection.
A miniature laser speckle fluorescence sectioning microscope for cell imaging
作者: 邵永红, 李恒, 文侨, 王岩, 屈军乐, 牛憨笨 主题: 年份: 2010
摘要: we present a miniature fluorescence sectioning microscope which uses a diode-pumped solid-state (dpss) laser as the light source and a fast translating diffuser to produce dynamically changing speckle patterns onto the back aperture of the objective to illuminate the sample. optical sectioning, which originates from the statistical characteristics of laser speckles, is obtained by calculating the contrast of a series of fluorescence images. high contrast fluorescence sectioning images of bovine pulmonary artery endothelial (bpae) cells are obtained. the image quality is similar to that of the images acquired by standard laser scanning confocal microscope (lscm). compared with lscm, the laser speckle fluorescence microscope (lsfm) presented in this letter has many advantages, such as simple configurations, low cost, compact, and easy to operate, which makes it possible to have wide spread applications in biomedicine.
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