Masaki OBARA^* and Kyu YOSHIMORI

Department of Electrical Engineering and Computer Science, Graduate School of Engineering, Iwate University, Morioka 020-8551, Japan

(Received May 1, 2014; Accepted July 18, 2014)

A new interferometric technique to obtain three-dimensional multispectral images of spatially incoherent polychromatic-source distributions is investigated. This technique is based on the measurement of a new type of volume interferogram, herein called the rotated-hyperbolic volume interferogram, which can be obtained by existing interferometer together with a novel aperture synthesis. This paper reports the first demonstration of the method: measurement of a monochromatic point source. The results obtained from this measurement included three-dimensional spatial information and spectral information corresponding to the impulse response function defined over a four-dimensional space. These experimental results confirmed that the imaging characteristics, particularly depth resolution, of the new method are superior to those of previous methods.

Key words: coherence imaging, three-dimensional imaging, interferometry, digital holography, spectrometry

^*E-mail address: masaki@ql.cis.iwate-u.ac.jp