IMAGE-FORMATION IN SCANNING MICROSCOPES WITH PARTIALLY COHERENT SOURCE AND DETECTOR
IMAGE-FORMATION IN SCANNING MICROSCOPES WITH PARTIALLY COHERENT SOURCE AND DETECTOR
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DOI：
10.1080/713819784
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发表时间：
1978-01-01
期刊：
影响因子：
--
通讯作者：
WILSON, T
中科院分区：
文献类型：
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作者：
SHEPPARD, CJR;WILSON, T
本文研究了扫描显微镜中光源和探测器的部分相干效应。导出了系统的传递函数，并讨论了各种特殊情况.如果有效源和有效检测器分别是相干的和非相干的，则显微镜（类型1）具有扫描透射电子显微镜（STEM）的形式。如果有效源和有效检测器都是相干的，则显微镜（类型2）是扫描声学显微镜的形式。可以构造这两种类型的扫描光学显微镜。使用2型扫描显微镜在暗场的效果进行了讨论。这种安排的优势超过1型暗场显微镜，成像弱对比度标本可以线性。
The effect of partial coherence of both the source and the detector in a scanning microscope is investigated. The transfer function for the system is derived and various special cases discussed. If the effective source and effective detector are coherent and incoherent, respectively, the microscope (Type 1) is of the form of the scanning transmission electron microscope (STEM). If the effective source and the effective detector are both coherent, the microscope (Type 2) is of the form of the scanning acoustic microscope. Scanning optical microscopes of both these types may be constructed. The effect of using a Type 2 scanning microscope in dark-field is discussed. This arrangement has the advantage over the Type 1 dark-field microscope that imaging for weak contrast specimens may be made linear.