Real-time single-shot full-field OCT based on dual-channel phase-stepper optics and 2D quaternionic analytic signal processing

Molly Subhash Hrebesh; Manabu Sato

doi:10.1117/12.807838

19 February 2009 Real-time single-shot full-field OCT based on dual-channel phase-stepper optics and 2D quaternionic analytic signal processing

Molly Subhash Hrebesh, Manabu Sato

Author Affiliations +

Proceedings Volume 7168, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIII; 71681H (2009) https://doi.org/10.1117/12.807838
Event: SPIE BiOS, 2009, San Jose, California, United States

Abstract

We describe a novel compact real-time single-shot full-field optical coherence tomography based on a dual-channel phase-stepper optics, which employs a 2-D quaternionic analytic signal processing technique to reconstruct the en-face OCT image. The experimental setup was based on a Linnik type polarization Michelson interferometer followed by a dual-channel phase-stepper optics and a single CCD camera to capture two 180° phase stepped images simultaneously. The interferometer is illuminated using a SLD source with central wavelength of 842 nm and spectral bandwidth of 16.2 nm, yielding an axial resolution of 19.8 μm. Using a 10 X (0.25-NA) microscope objective and a single CCD camera, the system covers an area of 325μm x 300μm (325 × 300 pixels) with a transverse resolution of 4.4 μm. We demonstrate the feasibility of this system for real-time imaging of scattering specimens such as a diaptomus.

Citation Download Citation

Molly Subhash Hrebesh and Manabu Sato "Real-time single-shot full-field OCT based on dual-channel phase-stepper optics and 2D quaternionic analytic signal processing", Proc. SPIE 7168, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIII, 71681H (19 February 2009); https://doi.org/10.1117/12.807838

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