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【原创】白光干涉显微镜的Z轴分辨率

金相显微镜



  • 请教:白光干涉显微镜(3D轮廓仪)的Z轴分辨率有这么高吗?0.01nm!是如何达到的?如下是英国TAYLOR HOBSON的一款产品简介,不知什么原因图片没有贴上.

    Talysurf CCI 3000A

    For applications requiring the ultimate in high precision 3D profile analysis, Talysurf 3000A brings an unparalleled level of performance with specifications never seen before.

    △ 0.01 nm resolution △0.003 nm Rq repeatability
    △ 100μm vertical range △ 0.3 – 100% reflectivity
    △ 1,048,576 data points △300mm capacity

    Talysurf CCI 3000A delivers high accuracy, repeatability and stability by using an advanced type of interferometer and a patented correlation algorithm. This method provides both high resolution and excellent sensitivity to returning light. Measurement set-up is easy: place the component on the stage, set the focus height and push the start button. Cycle time is 10 – 20 seconds. Motorised stages are available to increase throughput and virtually eliminate operator errors.

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  • atlas

    第1楼2008/08/19

    怎么没人帮忙?再加入一点资料供参考:
    白光作为光源用在干涉仪中时,由于它的相干长度非常短,因此要出现干涉图样就需要参考光路与测试光路的光程要基本近似相等。白光干涉系统中运用了合适的显微物镜就可形成白光干涉显微仪。它可以对物体的表面粗糙度和微小物体表面进行精细的分析。白光扫描干涉(scanning white light interferometric SWLI) 显微仪(或称3-D光学表面轮廓仪)中,物体放在物镜的焦面即可被测。SWLI显微仪可以对物体进行精细地垂直方向的扫描。因为物体只有在物镜的焦面上才能产生干涉图样,所以也没有激光干涉中出现的周期性图样的问题。

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