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A Two-Photon Femtosecond Laser System for Three-Dimensional Microfabrication and Data Storage 总被引:5,自引:0,他引:5 下载免费PDF全文
Utilizing the well-focused femtosecond laser with extreme high pulse intensity, we built a two-photon micro-fabrication and data storage system, which was introduced through several functional parts. Based on this homemade system, several three-dimensional microstructures were fabricated by two-photon polymerization, and three-dimensional data storage of six-layers was achieved by two-photon excitation with a photochromic material. 相似文献
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双光子激光扫描显微镜中折射率失配引起的图象变形研究 总被引:1,自引:0,他引:1
双光子激光扫描显微镜(TPLSM)在观察生理溶液中的生物样品的结构时,水浸物镜是最好的选择.但是TPLSM在进行生物样品的三维结构观察时,需要样品和物镜在Z轴方向上做相对移动,这种移动很容易引起样品在水溶液中飘动.为了防止这种样品的漂移,往往要在水物镜和样品之间加入盖波片.由于盖波片和水及样品间的折射率失配将会导致TPLSM荧光图象的变形,给观察结果带来误差.本文主要利用TPLSM的外源探测器(ex-ternal detection)观察荧光小球的TPLSM的荧光图象,比较插入盖波片前后小球荧光图象的变化情况,研究水浸物镜在插入盖波片后折射率失配引起TPLSM图象的变形程度及共焦小孔对改进图象变形的作用.结果显示盖波片的折射率失配不仅导致TPLSM荧光图象的畸变,同时还导致TPLSM图象的荧光强度和信噪比的下降.进一步的研究表明共焦小孔可以部分改进由于折射率失配引起畸变的TPLSM荧光图象的质量. 相似文献
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