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Updated: May 13, 2026
11:21
Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography
Published on: January 15, 2013
Resolution improvement in spectral-domain optical coherence tomography based on classical intensity correlations
Tomohiro Shirai1, Ari T Friberg
1Electronics and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 2, Tsukuba, Japan. t.shirai@aist.go.jp
Optics Letters
|March 5, 2013
Summary
This study introduces a spectral-domain optical coherence tomography (SD-OCT) system using classical intensity correlations. The novel approach theoretically enhances axial resolution by a factor of √2.
Area of Science:
- Biomedical Optics
- Optical Metrology
- Imaging Science
Background:
- Spectral-domain optical coherence tomography (SD-OCT) is a key imaging modality.
- Enhancing axial resolution in OCT is crucial for detailed subsurface imaging.
- Classical intensity correlations offer a novel approach to optical measurements.
Purpose of the Study:
- To develop a resolution-improved SD-OCT system.
- To leverage classical intensity correlations for enhanced OCT performance.
- To explore unique features of the proposed SD-OCT configuration.
Main Methods:
- Implementation of a Hong-Ou-Mandel interferometer at the output of a conventional SD-OCT.
- Theoretical analysis of the system's performance based on classical intensity correlations.
- Comparison with existing intensity-based OCT techniques.
Main Results:
- Theoretical demonstration of a √2 improvement in axial resolution.
- The proposed system acts as a counterpart to intensity-based time-domain OCT.
- Identification of unique and useful system characteristics.
Conclusions:
- The developed SD-OCT system offers enhanced axial resolution.
- Classical intensity correlations provide a viable method for OCT improvement.
- The system presents novel capabilities for optical imaging applications.
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