We propose high-speed spectral domain polarization-sensitive optical coherence tomography (SD-PS-OCT) using a single camera and a 1 ×2 optical switch at the 1.3-μm region. The PS-low coherence interferometer used in the system is constructed using free-space optics. The reflected horizontal and vertical polarization light rays are delivered via an optical switch to a single spectrometer by turns. Therefore, our system costs less to build than those that use dual spectrometers, and the processes of timing and triggering are simpler from the viewpoints of both hardware and software. Our SD-PS-OCT has a sensitivity of 101.5dB, an axial resolution of 8.2 μm, and an acquisition speed of 23,496 A-scans per second. We obtain the intensity, phase retardation, and fast axis orientation images of a rat tail tendon ex vivo.
- Medical biological imaging
- Polarization-sensitive optical coherence tomography
- Single camera
ASJC Scopus subject areas
- Biomedical Engineering
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics