Abstract
We present a common path Fourier domain optical coherence tomography (FDOCT) setup where the reference signal arises from multiple reflections within the sample arm. Two configurations are demonstrated. The first is based on a reflective microscope objective while the second is based on a normal (refractive) microscope objective. The second configuration is effectively a Mireau interferometer. We present sensitivity analysis of these setups and images of in vivo skin. Advantages of both common path arrangements include: 1) the reference surface is not close to the sample surface while keeping the optical path lengths matched (so the additional interferometer is not needed) and 2) the user can independently control reference and sample arm power. Additionally, the configuration using the refractive objective ensures that the coherence gate and focus gate always match. A disadvantage is that the reference arm power in certain circumstances is not optimal (i.e. is not close to saturating the CCD). However, this issue can be removed by a light source of sufficient output power. We believe the idea is scalable and therefore of interest to endoscopy applications.
Original language | English |
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Title of host publication | Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XV |
Publisher | SPIE-International Society for Optical Engineering |
Number of pages | 8 |
Volume | 7889 |
ISBN (Print) | 9780819484260 |
DOIs | |
Publication status | Published - 2011 |
Event | Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XV - San Francisco, CA, United States Duration: 24 Jan 2011 → 26 Jan 2011 |
Conference
Conference | Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XV |
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Country/Territory | United States |
City | San Francisco, CA |
Period | 24/01/11 → 26/01/11 |
Keywords
- common path interferometers
- Fourier domain optical coherence tomography
- optical coherence tomography
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Electronic, Optical and Magnetic Materials
- Biomaterials
- Radiology Nuclear Medicine and imaging