OBSERVATION TECHNIQUE DUE TO COHERENT VIBRATION

摘要

PROBLEM TO BE SOLVED: To provide a technique for reducing the effect of the vibration acting on an observation target when the observation target is observed by allowing vibration to act on the observation target. SOLUTION: A plurality of vibrations having coherency are produced and the intensity of the vibration acting on the observation target by the interference of a plurality of the vibrations is set to 1/2 or below of the average intensity of the vibration at the position of the observation target. By shifting a focus from the observation target, the focus shift image containing the hologram of the observation target is formed on an observation surface from the vibration interacting with the observation target. Then, the vibration at the position of the observation target is regenerated from the focus shift image formed on the observation surface. COPYRIGHT: (C)2008,JPO&INPIT