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Phase-shifting algorithm to achieve high-speed long-depth-range probing by frequency-domain optical coherence
Rainer A Leitgeb1, Christoph K Hitzenberger, Adolf F Fercher
1Department of Medical Physics, University of Vienna, Waehringer Strasse 13, Vienna A-1090, Austria. rainer.leitgeb@univie.ac.at
Optics Letters
|December 3, 2003
Summary
This study introduces a new Fourier-domain optical coherence tomography (FDOCT) method using only two interferograms. This technique effectively removes autocorrelation terms, enhancing image quality and measurement range in FDOCT imaging.
Area of Science:
- Biomedical Optics
- Optical Imaging
- Metrology
Background:
- Standard Fourier-domain optical coherence tomography (FDOCT) is limited by autocorrelation terms.
- These terms obscure object information, reducing sensitivity and signal-to-noise ratio.
- Existing phase-retrieval methods require multiple interferograms (3-5) for artifact removal.
Purpose of the Study:
- To develop a novel FDOCT technique for artifact removal.
- To enhance sensitivity and signal-to-noise ratio in FDOCT.
- To reduce the number of required interferograms for complex FDOCT.
Main Methods:
- Exploitation of phase information from recorded interferograms.
- Development of a phase-retrieval algorithm requiring only two interferograms.
- Implementation of complex FDOCT features.
Main Results:
- Successful removal of autocorrelation terms.
- Demonstration of complex FDOCT capabilities with reduced data acquisition.
- Preservation of object information and improved signal quality.
Conclusions:
- The novel technique offers an efficient alternative for complex FDOCT.
- It significantly reduces data requirements compared to standard methods.
- This advancement improves FDOCT performance for various applications.