Abstract

We have developed a new algorithm and configuration for self-eliminating the autocorrelation of the object wave in Fourier-domain optical coherence tomography. A self-interferogram of the object wave is acquired synchronously with the standard interferogram of the recombined object and reference waves. The former is then subtracted from the latter after Fourier transformation. The algorithm is validated by numerical simulation and by experimental measurement of a U.S. Air Force target and a feline eye.

© 2005 Optical Society of America

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References

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2005 (2)

2003 (4)

2000 (1)

1998 (1)

G. Hausler and M. W. Lindner, J. Biomed. Opt. 3, 21 (1998).
[CrossRef]

Bajraszewski, T.

Belabas, N.

Bouma, B. E.

Cense, B.

Chen, Z.

de Boer, J. F.

Dorrer, C.

Fercher, A. F.

Götzinger, E.

Hausler, G.

G. Hausler and M. W. Lindner, J. Biomed. Opt. 3, 21 (1998).
[CrossRef]

Hitzenberger, C. K.

Joffre, M.

Leitgeb, R.

Leitgeb, R. A.

Likforman, J.-P.

Lindner, M. W.

G. Hausler and M. W. Lindner, J. Biomed. Opt. 3, 21 (1998).
[CrossRef]

Nelson, J. S.

Park, B. H.

Pierce, M. C.

Pircher, M.

Tearney, G. J.

Yun, S. H.

Zhang, J.

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Figures (4)

Fig. 1
Fig. 1

Schematic of an AK self-elimination FDOCT system: SLD, superluminescent diode; B, B1, B2, beam splitters; L1, L2, lenses; BE, beam expander; ND, neutral density filter; M1–M4, mirrors; SM, spectrometer.

Fig. 2
Fig. 2

(Online color) FDOCT images of a U.S. Air Force 1951 target (a) before and (b) after self-elimination of AK. The B-scan crosses the III bar pattern in group 0, element 6. Image dimensions: width (B-scan) 1.95 mm , height (optical depth) 3.9 mm in air.

Fig. 3
Fig. 3

(Online color) FDOCT images of a feline eye (a) before and (b) after self-elimination of AK.

Fig. 4
Fig. 4

Simulated (a) r o ( λ ) , (b) obj ( λ ) , (c) R O ( z ) , and (d) X C ( z ) of a glass slide. The vertical scale of (b) is half that of (a). The x and y axes in (c) and (d) are optical depth (mm) and amplitude, respectively.

Equations (9)

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r o ( k ) = E o ( k ) + E r ( k ) 2 ,
x c ( k ) = r o ( k ) obj ( k ) ref ( k ) ,
X C ( z ) = R O ( z ) OBJ ( z ) REF ( z ) ,
E r ( k ) = E s ( k ) exp ( j k 2 z r ) ,
E o ( k ) = i a i ( z i ) E s ( k ) exp ( j k 2 z i ) ,
x c ( k ) = s ( k ) i 2 a i cos ( k 2 z i r ) ,
obj ( k ) = s ( k ) i a i 2 + s ( k ) i j 2 a i a j cos ( k 2 z i j ) ,
X C ( z ) = i a i Γ ( z z i r ) + i a i Γ ( z + z i r ) ,
OBJ ( z ) = i a i 2 Γ ( z ) + i j a i a j Γ ( z z i j ) + i j a i a j Γ ( z + z i j ) ,

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