Algorithm for reconstruction of digital holograms with adjustable magnification.
A new algorithm that allows for reconstruction of digital holograms with adjustable magnification is proposed. The algorithm involves two reconstruction steps implemented by a conventional single Fourier-transform algorithm. The advantages of the algorithm lie in its adaptability to various object sizes and recording distances as well as in its capability to maintain the pitch of a reconstructed image, independent of the reconstruction distance and wavelength for objects larger than a CCD. The feasibility of the algorithm is demonstrated by experiments. The algorithm is especially useful for reconstructing color holograms and for metrological applications.
Department of Electronics, Gunma University, Kiryu, Gunma, Japan. zfc@el.gunma-u.ac.jp
Fucai
F
Zhang
Ichirou
I
Yamaguchi
L P
LP
Yaroslavsky