Simultaneous B-M-mode scanning method for real-time full-range Fourier domain optical coherence tomography.
High-speed complex full-range Fourier domain optical coherence tomography (FD-OCT) is demonstrated. In this FD-OCT, the phase modulation of a reference beam (M scan) and transversal scanning (B scan) are simultaneously performed. The Fourier transform method is applied along the direction of the B scan to reconstruct complex spectra, and the complex spectra comprise a full-range OCT image. Because of this simultaneous B-M-mode scan, the FD-OCT requires only a single A scan for each single transversal position to obtain a full-range FD-OCT image. A simple but slow version of the FD-OCT visualizes the cross section of a plastic plate. A modified fast version of this FD-OCT investigates a sweat duct in a finger pad in vivo and visualizes it with an acquisition time of 27 ms.
Institute of Applied Physics, University of Tsukuba, Tennodai 1-1-1, Ibaraki, Tsukuba 305-8573, Japan. yasuno@optlab2.bk.tsukuba.ac.jp
Yoshiaki
Y
Yasuno
Shuichi
S
Makita
Takashi
T
Endo
Gouki
G
Aoki
Masahide
M
Itoh
Toyohiko
T
Yatagai
D003199:Computer Systems; D007089:Image Enhancement / Q000295:instrumentation* / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000295:instrumentation* / Q000379:methods; D017550:Spectroscopy, Fourier Transform Infrared / Q000295:instrumentation* / Q000379:methods; D018511:Systems Integration; D041623:Tomography, Optical Coherence / Q000295:instrumentation* / Q000379:methods