Twin image elimination from two in-line holograms via phase retrieval

• 作 者: 戎路 潘锋 肖文 李艳 王璠璟
• 机 构: Key Laboratory of Precision Opto-mechanics Technology, Beihang University,
• 出 处: Chinese Optics Letters
• 发表日期: 2012年06期
• 关键词: retrieval elimination superposition holography eliminate conjugate faster constr

The reconstruction quality of in-line holography suffers from the superposition of twin images that have different foci but identical information content. We propose a phase retrieval method using two axially displaced holograms and a finite transmission constraint to eliminate the conjugate image. The simulation and experimental results demonstrate a better elimination effect and a faster rate of convergence compared with those of previously reported methods. Two holograms can be recorded simultaneously using two cameras, thus this technique can be used in real-time imaging.

The reconstruction quality of in-line holography suffers from the superposition of twin images that have different foci but identical information content. We propose a phase retrieval method using two axially displaced holograms and a finite transmission constraint to eliminate the conjugate image. The simulation and experimental results demonstrate a better elimination effect and a faster rate of convergence compared with those of previously previously reported methods. Two holograms can be recorded simultaneously using two cameras, thus this technique can be used in real-time imaging.