Noise-Limitations of Coherence Imaging Based on Wavefront Folding Interferometry |
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| Authors: | Hidenobu Arimoto Kyu Yoshimori Kazuyoshi Itoh |
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| Institution: | (1) Graduate School of Engineering, Department of Applied Physics, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan;(2) Earth Observation Research Center, National Space Development Agency of Japan, 1-1-9 Roppongi, Minatoku, Tokyo 106-0032, Japan |
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| Abstract: | Noise-limitations of the coherence imaging system based on the wavefront folding interferometer are studied. The signal-to-noise ratio SNR in two kinds of noise-limiting cases, the photon-noise-limit and the detector-noise-limit, is derived and are compared with the experimental results. The experimental demonstration is conducted using a wavefront folding interferometer and a single slit that provides the light source. An ensemble of ten sets of data are measured under the same conditions and the statistics of the retrieved images are computed from them. It is verified that the experimental results generally agree with the theoretical expectations. |
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| Keywords: | coherence imaging cross-spectral density photon-noise-limit detector-noise-limit |
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