Quantitative detection and compensation of phase-shifting error in two-step phase-shifting digital holography

OPTICS COMMUNICATIONS

卷:282

Article

Chen, W.¹  Quan, C.¹  Tay, C. J.¹  Fu, Y.¹ 

[1] Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore

关键词: Phase-shifting digital holography;    Phase-shifting error;    Quantitative detection;    Quantitative compensation;   

DOI  :  10.1016/j.optcom.2009.04.025

来源: Elsevier

【 摘 要 】

Phase-shifting digital holographic technique is a powerful tool for the measurement of various physical parameters, such as object deformation and liquid or cell's refractive index change. However, for an accurate measurement, phase-shifting error in the reference wave path is still a major issue. In this paper, three novel and simple algorithms are proposed to quantitatively detect and correct phase-shifting error for a pure phase object in two-step phase-shifting digital holography. Influence of phase-shifting error is illustrated, and the effectiveness of the proposed algorithms is demonstrated by numerical simulation results. (C) 2009 Elsevier B.V. All rights reserved.

【 授权许可】

Free