Artículos de revistas
Simplified phase-recovery method in temporal speckle pattern interferometry
Fecha
2014-10Registro en:
Etchepareborda, Pablo Gonzalo; Bianchetti, Arturo Abel; Vadnjal, Ana Laura; Federico, Roque Alejandro; Kaufmann, Guillermo Hector; Simplified phase-recovery method in temporal speckle pattern interferometry; Optical Society Of America; Applied Optics; 53; 30; 10-2014; 7120-7128
0003-6935
Autor
Etchepareborda, Pablo Gonzalo
Bianchetti, Arturo Abel
Vadnjal, Ana Laura
Federico, Roque Alejandro
Kaufmann, Guillermo Hector
Resumen
A simplified method for object phase recovering is implemented in temporal speckle pattern interferometry when the employed interferometer admits the introduction of a temporal carrier, and the well-known two-beam interferometry equation is verified. The spatiotemporal evolution of the object phase is isolated by modulating the acquired interferometric intensity signals with a known temporal carrier in order to carry out its analysis by using a bivariate empirical mode decomposition framework that avoids the application of the Hilbert transform, which is not suitable for intensity signals with abrupt fluctuations. The advantages and limitations of this technique are analyzed and discussed by comparing computation time and phase recovery capability with well-known phase-retrieval methods by means of numerical simulations and experimental data.