排序方式: 共有12条查询结果,搜索用时 15 毫秒
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利用三维漫反射物体的激光色编码技术,并结合边缘照明全息的特点,制造真彩色全息。采用这方法可使彩色全息再现做到方便、严密、整体。具有很大的开发应用前景。 相似文献
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AlGaInP/GaInP SCH S—SQW激光器光束质量的矢量矩分析 总被引:1,自引:0,他引:1
本文应用非傍轴矢量矩理论,分析了670nm AlGaInP/GaInP分别限制应变单量子阱(SCH S-SQW)激光器在弱激射和正常激射条件下的垂直于结面方向的光束质量因子M^2,分析结果表明,在两种情况下M^2均小于1,而且前者具有更小的M^2。 相似文献
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In this paper, a new kind of light beam called off-axial elliptical
cosine-Gaussian beam
(ECosGBs) is defined by using the tensor method. An analytical propagation
expression for the ECosGBs passing through axially nonsymmetrical optical
systems is derived by using vector integration. The intensity distributions
of ECosGBs on the input plane, on the output plane with the equivalent
Fresnel number being equal to 0.1 and on the focal plane are respectively
illustrated for the propagation properties. The results indicate that an
ECosGB is eventually transformed into an elliptical
cosh-Gaussian beam. In other words, ECosGBs and
cosh-Gaussian beams act in a reciprocal manner after propagation. 相似文献
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报道提高计算全息图(CGH)再现像精度的一种新方法,它在罗曼Ⅲ型计算全息的基础上.在取样点数相同的前提下,利用显示器的固有分辨率,将全图分解成多幅子图.再应用图像处理软件重新拼接,从而提高了再显像分辩率。 相似文献
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