Full range 1-μm spectral domain optical coherence tomography by using electro-optical phase modulator

Full-range spectral domain optical coherence tomography (SD-OCT) with a 1-μm band light source is demonstrated. The phase of reference arm is modulated simultaneously as the probing beam laterally scans the sample (B-scan). The obtained two dimensional spectral interferogram is processed by Fourier transform method to obtain complex spectrum which leads to full-range OCT image. The measurement speed of this system was 7.96 kHz, the measured axial resolution was 9.6 μm in air and the sensitivity was 99.4 dB. To demonstrate the effect of mirror image elimination, in vivo human eye pathology was measured.

[1]  Zhongping Chen,et al.  Optimal wavelength for ultrahigh-resolution optical coherence tomography. , 2003, Optics express.

[2]  T. Yatagai,et al.  Simultaneous B-M-mode scanning method for real-time full-range Fourier domain optical coherence tomography. , 2006, Applied Optics.

[3]  J. Welzel.  Optical coherence tomography in dermatology: a review , 2001, Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging.

[4]  A. Fercher,et al.  Measurement of intraocular distances by backscattering spectral interferometry , 1995 .

[5]  B. Colston,et al.  Dental OCT. , 1998, Optics express.

[6]  Joseph A Izatt,et al.  High-speed complex conjugate resolved retinal spectral domain optical coherence tomography using sinusoidal phase modulation. , 2007, Optics letters.

[7]  T. Yatagai,et al.  In vivo high-contrast imaging of deep posterior eye by 1-microm swept source optical coherence tomography and scattering optical coherence angiography. , 2007, Optics express.

[8]  G. Ripandelli,et al.  Optical coherence tomography. , 1998, Seminars in ophthalmology.