Abstract

We present a full-range, complex, spectral-domain optical-coherence-tomography (SD-OCT) system that is based on a double-beam scanning approach. The sample beams of two identical SD-OCT setups are combined collinearly by a bulk optic beam splitter before illuminating the object. The required phase shift for the complex signal reconstruction comes from the phase difference between both interferometers. Because of the double-beam scanning approach, our system is completely insensitive to sample motion. To demonstrate the performance of our setup, we present images of the human optic nerve head in vivo and of a human tooth.

© 2010 Optical Society of America

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    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]

2007 (3)

2006 (3)

2005 (1)

2003 (1)

2002 (2)

M. Wojtkowski, A. Kowalczyk, R. Leitgeb, and A. F. Fercher, Opt. Lett. 27, 1415 (2002).
[CrossRef]

M. Wojtkowski, R. Leitgeb, A. Kowalczyk, T. Bajraszewski, and A. F. Fercher, J. Biomed. Opt. 7, 457 (2002).
[CrossRef] [PubMed]

1999 (1)

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

1995 (1)

A. F. Fercher, C. K. Hitzenberger, G. Kamp, and S. Y. El-Zaiat, Opt. Commun. 117, 43 (1995).
[CrossRef]

An, L.

Aoki, G.

Bachmann, A.

Bajraszewski, T.

R. A. Leitgeb, C. K. Hitzenberger, A. F. Fercher, and T. Bajraszewski, Opt. Lett. 28, 2201 (2003).
[CrossRef] [PubMed]

M. Wojtkowski, R. Leitgeb, A. Kowalczyk, T. Bajraszewski, and A. F. Fercher, J. Biomed. Opt. 7, 457 (2002).
[CrossRef] [PubMed]

Baumann, B.

Bouma, B. E.

Chandra Sekhar, S.

El-Zaiat, S. Y.

A. F. Fercher, C. K. Hitzenberger, G. Kamp, and S. Y. El-Zaiat, Opt. Commun. 117, 43 (1995).
[CrossRef]

Endo, T.

Fercher, A. F.

R. A. Leitgeb, C. K. Hitzenberger, A. F. Fercher, and T. Bajraszewski, Opt. Lett. 28, 2201 (2003).
[CrossRef] [PubMed]

M. Wojtkowski, R. Leitgeb, A. Kowalczyk, T. Bajraszewski, and A. F. Fercher, J. Biomed. Opt. 7, 457 (2002).
[CrossRef] [PubMed]

M. Wojtkowski, A. Kowalczyk, R. Leitgeb, and A. F. Fercher, Opt. Lett. 27, 1415 (2002).
[CrossRef]

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

A. F. Fercher, C. K. Hitzenberger, G. Kamp, and S. Y. El-Zaiat, Opt. Commun. 117, 43 (1995).
[CrossRef]

Götzinger, E.

Hitzenberger, C. K.

Itoh, M.

Kamp, G.

A. F. Fercher, C. K. Hitzenberger, G. Kamp, and S. Y. El-Zaiat, Opt. Commun. 117, 43 (1995).
[CrossRef]

Kowalczyk, A.

M. Wojtkowski, R. Leitgeb, A. Kowalczyk, T. Bajraszewski, and A. F. Fercher, J. Biomed. Opt. 7, 457 (2002).
[CrossRef] [PubMed]

M. Wojtkowski, A. Kowalczyk, R. Leitgeb, and A. F. Fercher, Opt. Lett. 27, 1415 (2002).
[CrossRef]

Lasser, T.

Leitgeb, R.

A. Bachmann, R. Leitgeb, and T. Lasser, Opt. Express 14, 1487 (2006).
[CrossRef] [PubMed]

M. Wojtkowski, A. Kowalczyk, R. Leitgeb, and A. F. Fercher, Opt. Lett. 27, 1415 (2002).
[CrossRef]

M. Wojtkowski, R. Leitgeb, A. Kowalczyk, T. Bajraszewski, and A. F. Fercher, J. Biomed. Opt. 7, 457 (2002).
[CrossRef] [PubMed]

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

Leitgeb, R. A.

Makita, S.

Michaely, R.

Pircher, M.

Sattmann, H.

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

Tearney, J.

Vakoc, B. J.

Wang, R. K.

Wojtkowski, M.

M. Wojtkowski, R. Leitgeb, A. Kowalczyk, T. Bajraszewski, and A. F. Fercher, J. Biomed. Opt. 7, 457 (2002).
[CrossRef] [PubMed]

M. Wojtkowski, A. Kowalczyk, R. Leitgeb, and A. F. Fercher, Opt. Lett. 27, 1415 (2002).
[CrossRef]

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

Yasuno, Y.

Yatagai, T.

Yun, S. H.

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Figures (3)

Fig. 1
Fig. 1

Schematic diagram of the dual-beam FRC SD-OCT setup: FBS, 50 : 50 fiber beam splitter; FC, fiber coupler; VDF, variable neutral-density filter; DCP, dispersion-compensating prism pair; M, mirror; DG, diffraction grating; L, lens; LSC, line-scan CCD camera; BS, bulk optic 50 : 50 beam splitter; GS, galvanometer scanner; S, sample.

Fig. 2
Fig. 2

OCT B-scan images of the human nerve head in vivo displayed on a logarithmic gray scale. (a) Image obtained by an inverse Fourier transform over one real valued spectral data from one camera. (b) Image obtained from reconstructed complex spectrum without phase and amplitude correction algorithm. (c) Image obtained from reconstructed complex spectrum with correction algorithm.

Fig. 3
Fig. 3

OCT B-scan images of a human tooth that was moving at constant velocity of 1.5 ± 0.1 mm / s along the beam direction. All three images are reconstructed from the same dataset and displayed on a logarithmic gray scale. (a) Image obtained by an inverse Fourier transform of one real valued spectral dataset from one camera. (b) Image after complex signal reconstruction algorithm described in [8]. (c) Image obtained with the new dual-beam scanning method, which shows no sensitivity to sample motion.

Equations (3)

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FT 1 { I ( ν ) } = Γ r r ( τ ) + n Γ n n ( τ ) + n m { Γ [ τ + ( τ m τ n ) ] + Γ [ τ ( τ m τ n ) ] } + n { Γ [ τ + ( τ r τ n ) ] + Γ [ τ ( τ r τ n ) ] } .
I c ( ν ) = I c ( ν ) + i I c ( ν , Δ ϕ = 90 ° ) .
S c ( τ ) = FT 1 { I c ( ν ) } = 2 n Γ [ τ + ( τ r τ n ) ] .

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