Laser coherence length requirement for speckle contrast diffuse correlation tomography (scDCT)

Faezeh Akbari; Fatemeh Hamedi; Mehrana Mohtasebi; Faraneh Fathi; Chong Huang; Lei Chen; Guoqiang Yu

doi:10.1117/12.3001788

13 March 2024 Laser coherence length requirement for speckle contrast diffuse correlation tomography (scDCT)

Faezeh Akbari, Fatemeh Hamedi, Mehrana Mohtasebi, Faraneh Fathi, Chong Huang, Lei Chen, Guoqiang Yu

Proceedings Volume PC12827, Multiscale Imaging and Spectroscopy V; PC128270P (2024) https://doi.org/10.1117/12.3001788
Event: SPIE BiOS, 2024, San Francisco, California, United States

Abstract

We investigated the impact of laser coherence length on reconstructed flow contrast images with our innovative speckle contrast diffuse correlation tomography (scDCT) device. We tested three lasers with varied coherence lengths: >10 meters, ~3.3 millimeters, and ~390 micrometers. Lasers with coherence lengths larger than millimeters yielded good-quality flow images with higher signal-to-noise ratios (SNR) and less image distortion. We concluded that scDCT measurements do not require excessively long coherence lasers with high costs.

Conference Presentation

Citation Download Citation

Faezeh Akbari, Fatemeh Hamedi, Mehrana Mohtasebi, Faraneh Fathi, Chong Huang, Lei Chen, and Guoqiang Yu "Laser coherence length requirement for speckle contrast diffuse correlation tomography (scDCT)", Proc. SPIE PC12827, Multiscale Imaging and Spectroscopy V, PC128270P (13 March 2024); https://doi.org/10.1117/12.3001788

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