白光——光栅再现普通透射全息图原理

根据全息术基本原理 ,从理论上分析得到了白光再现普通透射全息图获得各色像重合需要满足的条件 ,论述了利用光栅实现该条件的可行性 ,给出了辅助光栅、全息图与再现图像位置的关系方程 。

白光完波全息用于三维位移测量

提出了白光完波全息用于三维位移测量的可能性，指出了实验途径，并进行了多方面的实验验证．实测了一种试件的位移值，并与其它方法进行了比较．明确了发展方向．

Lyase Activities of Heterologous CpcS and CpcT for Phycocyanin Holo-β-subunit from Arthrospira platensis in Escherichia coli

Arthrospira platensis is an economically important cyanobacterium; and it has been used widely in food and pharmaceutical industries. The phycocyanin(PC) from A. platensis is extremely valuable in medicine and molecular biology due to its antioxidation and anti-tumoring activity and applicability as fluorescence protein tag. In present study, two recombinant plasmids, one contained the phycocyanobilin(PCB)-producing genes(hox1 and pcyA) while the other contained the phycobiliprotein gene(cpcB) and the lyase gene(either cpcS/U or cpcT), were constructed and synchronically transferred into E. coli in order to test the the activities of relevant lyases for catalysing PCB addition to CpcB during synthesizing fluorescent PC holo-β-subunit(β-PC) of A. platensis. As was evidenced by the fluorescence emitted at a peak specific for PC, CpcB was successfully synthesized in E. coli, to which co-expressed PCBs attached though at a relatively low efficiency. The results showed that the attachment of PCBs to CpcB were carried out mainly by co-expressed CpcS/U but CpcB also showed some autocatalytic activity. Currently, no CpcT activity was detected in this E. coli expression system. Further studies will be conducted to improve the efficiency of fluorescent PC synthesis in E. coli.

水下全息实验

将激光全息照相技术应用于水中实物的拍摄。本文从理论和实验这两方面对像面全息在水下环境中的实现进行了研究,并进行了大量的水下实验,得到了清晰的水下全息图。

眼球全息初探

介绍以眼球为被拍摄物的全息实验情况,重点分析实验光路和记录介质。设计了新光路,并对不同物体以及不同干板进行了测试,给出了实验结果。最后生物实体以牛蛙眼球作目标,得到了全息图。

激光损伤残余应力三维检测技术

为了准确测量残余应力的分布情况,提出一种基于反射式暗场白光数字全息的残余应力三维检测技术。该技术将激光损伤点附近区域沿着轴向以数值化的形式离散成多层,每层的暗场反射光强度正比于该层光学双折射的轴向梯度,因此利用白光数字全息测量每层暗场反射光强度,即可结合光弹效应重建各层的剪切应力。通过对激光损伤的熔石英玻璃测量,实际验证所提技术可以对样品的三维残余应力分布进行准确重建,且轴向分辨率可达10 μm。实验结果表明,所提技术可以提高加工工艺和衡量产品的质量。