Real-time phase-step estimation in phase-shifting interferometry

Rajesh Langoju; Abhijit Patil; Pramod Kumar Rastogi

doi:10.1117/1.2715444

1 March 2007 Real-time phase-step estimation in phase-shifting interferometry

Rajesh Langoju, Abhijit Patil, Pramod Kumar Rastogi

Author Affiliations +

Optical Engineering, Vol. 46, Issue 3, 035601 (March 2007). https://doi.org/10.1117/1.2715444

Abstract

We present a simple and effective method for estimating arbitrary phase steps in the presence of noise in phase-shifting interferometry. The method is based on the linear prediction property of the sinusoids. Simulation and experimental results obtained from a holographic interferometry prove the efficiency and feasibility of the proposed method.

©(2007) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Rajesh Langoju, Abhijit Patil, and Pramod Kumar Rastogi "Real-time phase-step estimation in phase-shifting interferometry," Optical Engineering 46(3), 035601 (1 March 2007). https://doi.org/10.1117/1.2715444

Published: 1 March 2007

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