1.
Appl Opt
; 38(28): 5944-7, 1999 Oct 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-18324112
RESUMO
We have used a computer-generated holographic optical element (HOE) with electronic speckle pattern interferometry to calculate the interference phase corresponding to the deformation of a test object from a single TV frame. The HOE is a modified crossed phase grating that introduces a known phase change between the +/-1 diffracted orders, without being translated. The progressive propagation of transient mechanical waves was measured with an rms precision of 2pi/30.