Acta Optica Sinica, Volume. 5, Issue 11, 1018(1985)
Speckle shearing interferometry with a normal grating
The paper proposes a new method of speckle shearing interferometry which uses a normal grating as the shearing component. Advantages of this method include simplicity of setup, low losses of light, and simultaneous determination of derivatives of surface displacements of a structure with respect to four different directions. Experimental results for strain measurements and nondestructive tests are presented.
Get Citation
Copy Citation Text
ZHU YIQING, LING DBHONG, WANG CE. Speckle shearing interferometry with a normal grating[J]. Acta Optica Sinica, 1985, 5(11): 1018