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激光束由物镜耦合到光纤中,光纤输出端粘合在物体上一起振动。光纤射出的球面波照射位置现定不动的全息双频光栅上,在其±1级分量中出现杨氏干涉条纹。光纤振动时条纹也跟随变动,由光
The laser beam is coupled to the fiber by the objective and the fiber output is bonded to the object and vibrates together. Optical fiber out of the spherical wave irradiation position is fixed on the holographic dual-frequency grating, in its ± 1 component Young’s interference fringes appear. When the fiber vibration stripes also follow changes, by the light