Electronic shear interferometry: application of a (double-) pulsed laser.
Electronic shear interferometry: application of a (double-) pulsed laser.
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DOI：
10.1364/ao.32.004719
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发表时间：
1993-09
期刊：
影响因子：
1.9
通讯作者：
R. Spooren;A. A. Dyrseth-A.;M. Vaz
中科院分区：
文献类型：
--
作者：
R. Spooren;A. A. Dyrseth-A.;M. Vaz
在干涉计量中使用双脉冲激光放松了对实验装置的稳定性要求。这种激光器的使用也使人们有可能研究高速动态过程。我们证明使用双脉冲激光在电子剪切干涉。我们展示了如何图像减法可以应用于产生高品质的条纹图案，而无需特殊的光圈设计。从理论上研究了条纹可见度，并与使用密切相关的电视全息技术时得到的条纹可见度进行了比较。新的双脉冲减法技术提供了可能的补偿激光强度波动，可以影响条纹可见度显着的脉冲电子剪切干涉。
The use of a double-pulsed laser in interferometric metrology relaxes the stability requirements for the experimental setup. The use of such a laser also makes it possible for one to study high-speed dynamic processes. We justify the use of a double-pulsed laser in electronic shear interferometry. We show how image subtraction can be applied to produce high-quality fringe patterns without a special aperture design. The fringe visibility is studied theoretically and is compared with the fringe visibility obtained when the closely related television-holography technique is used. The new double-pulse subtraction technique offers the possibility of compensation for laser intensity fluctuations that can affect the fringe visibility significantly in pulsed electronic shear interferometry.