Abstract

We introduce a simple and cheap method for phase-shifting Fourier domain optical coherence tomography (FDOCT) that does not need additional devices and can easily be implemented. A small beam offset at the fast beam-scanning mirror introduces a causal phase shift, which can be used for B-scan-based complex image reconstruction. We derive the conditions for optimal conjugate suppression and demonstrate the method on human skin in vivo for spectrometer-based FDOCT operating at 1300nm employing a handheld scanner.

© 2007 Optical Society of America

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References

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  1. A. F. Fercher, R. Leitgeb, C. K. Hitzenberger, H. Sattmann, and M. Wojtkowski, Proc. SPIE 3564, 173 (1999).
    [CrossRef]
  2. M. Wojtkowski, A. Kowalczyk, R. Leitgeb, and A. F. Fercher, Opt. Lett. 27, 1415 (2002).
    [CrossRef]
  3. R. A. Leitgeb, C. K. Hitzenberger, A. F. Fercher, and T. Bajraszewski, Opt. Lett. 28, 2201 (2003).
    [CrossRef] [PubMed]
  4. A. H. Bachmann, R. A. Leitgeb, and T. Lasser, Opt. Express 14, 1487 (2006).
    [CrossRef] [PubMed]
  5. A. H. Bachmann, R. Michaely, T. Lasser, and R. A. Leitgeb, Opt. Express 15, 9254 (2007).
    [CrossRef] [PubMed]
  6. A. Bradu, A. Podoleanu, and R. B. Rosen, J. Optoelectron. Adv. Mater. 7, 2913 (2005).
  7. Y. Yasuno, S. Makita, T. Endo, G. Aoki, M. Itoh, and T. Yatagai, Appl. Opt. 45, 1861 (2006).
    [CrossRef] [PubMed]
  8. R. K. Wang, Appl. Phys. Lett. 90, 054103 (2007).
    [CrossRef]
  9. B. H. Park, M. C. Pierce, B. Cense, S. H. Yun, M. Mujat, G. J. Tearney, B. E. Bouma, and J. F. de Boer, Opt. Express 13, 3931 (2005).
    [CrossRef] [PubMed]

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1999 (1)

A. F. Fercher, R. Leitgeb, C. K. Hitzenberger, H. Sattmann, and M. Wojtkowski, Proc. SPIE 3564, 173 (1999).
[CrossRef]

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Figures (3)

Fig. 1
Fig. 1

Schematics of (a) scanner offset geometry and (b) optical setup; see text for details.

Fig. 2
Fig. 2

(a)–(c) Shifting of sample spatial frequency spectrum. (d) Mean CSR over a tomogram depending on phase shift Δ ϕ for a mirror sample (black dotted curve), paper sample scanned at 40 deg s with ρ = 5 (solid curve) and ρ = 40 (dashed–dotted curve), and with ρ = 5 but doubled scanning frequency (dashed curve). The error bars are standard deviation values.

Fig. 3
Fig. 3

Tomogram of human inner lip ( 1800 × 512   pixels , 3 mm × 2.5 mm ), with (a) standard and (b) complex reconstruction; (c) orthogonal cross section of (b); (d) en face section along dashed lines in (b) and (c) at a skin depth of 700 μ m .

Equations (1)

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ν σ ν π 2 = N 4 x or N x π d λ f .

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