Abstract

A novel Fourier domain fast scanning optical delay line is proposed in which the walk-off is eliminated by only two passes through a diffraction grating. Working in transmission, the novel delay line is ideal for balanced optical coherence tomography configurations with recirculation of the reference beam. We evaluate theoretically and experimentally its walk-off and dispersion compensation capabilities.

© 2005 Optical Society of America

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References

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2004

T. Imran, K. Hong, T. J. Yu, and C. H. Nam, Rev. Sci. Instrum. 75, 2266 (2004).
[CrossRef]

2003

2000

1998

1997

1993

1981

Z. A. Yasa and N. M. Amer, Opt. Commun. 36, 406 (1981).
[CrossRef]

Amer, N. M.

Z. A. Yasa and N. M. Amer, Opt. Commun. 36, 406 (1981).
[CrossRef]

Bouma, B.

Chu, K. C.

Dienes, A.

Fujimoto, J.

Heritage, J. P.

Hirata, T.

J. A. Izatt, M. V. Sivak, A. Rollins, T. Hirata, and S. Iizuka, “Optical imaging device,” U.S. patent 6,564,089 (May 13, 2003).

Hong, K.

T. Imran, K. Hong, T. J. Yu, and C. H. Nam, Rev. Sci. Instrum. 75, 2266 (2004).
[CrossRef]

Iizuka, S.

J. A. Izatt, M. V. Sivak, A. Rollins, T. Hirata, and S. Iizuka, “Optical imaging device,” U.S. patent 6,564,089 (May 13, 2003).

Imran, T.

T. Imran, K. Hong, T. J. Yu, and C. H. Nam, Rev. Sci. Instrum. 75, 2266 (2004).
[CrossRef]

Izatt, J. A.

A. M. Rollins, M. D. Kulkarni, S. Yazdanfar, R. Ungarunyawee, and J. A. Izatt, Opt. Express 3, 219 (1998).
[CrossRef] [PubMed]

J. A. Izatt, M. V. Sivak, A. Rollins, T. Hirata, and S. Iizuka, “Optical imaging device,” U.S. patent 6,564,089 (May 13, 2003).

Kulkarni, M. D.

Kwong, K. F.

Nam, C. H.

T. Imran, K. Hong, T. J. Yu, and C. H. Nam, Rev. Sci. Instrum. 75, 2266 (2004).
[CrossRef]

Podoleanu, A. Gh.

Rollins, A.

J. A. Izatt, M. V. Sivak, A. Rollins, T. Hirata, and S. Iizuka, “Optical imaging device,” U.S. patent 6,564,089 (May 13, 2003).

Rollins, A. M.

Sampson, D. D.

Sivak, M. V.

J. A. Izatt, M. V. Sivak, A. Rollins, T. Hirata, and S. Iizuka, “Optical imaging device,” U.S. patent 6,564,089 (May 13, 2003).

Smith, E. D. J.

Tearney, G.

Ungarunyawee, R.

Yankelevich, D.

Yasa, Z. A.

Z. A. Yasa and N. M. Amer, Opt. Commun. 36, 406 (1981).
[CrossRef]

Yazdanfar, S.

Yu, T. J.

T. Imran, K. Hong, T. J. Yu, and C. H. Nam, Rev. Sci. Instrum. 75, 2266 (2004).
[CrossRef]

Zvyagin, A. V.

Appl. Opt.

J. Opt. Soc. Am. A

Opt. Commun.

Z. A. Yasa and N. M. Amer, Opt. Commun. 36, 406 (1981).
[CrossRef]

Opt. Express

Opt. Lett.

Rev. Sci. Instrum.

T. Imran, K. Hong, T. J. Yu, and C. H. Nam, Rev. Sci. Instrum. 75, 2266 (2004).
[CrossRef]

Other

J. A. Izatt, M. V. Sivak, A. Rollins, T. Hirata, and S. Iizuka, “Optical imaging device,” U.S. patent 6,564,089 (May 13, 2003).

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Figures (4)

Fig. 1
Fig. 1

Setup of the novel diffraction grating/galvoscanner based transmissive delay line configuration integrated in an OCT system with balance detection: DC1, DC2, OCT, directional couplers; TS, translation stage. See text for other definitions.

Fig. 2
Fig. 2

Detail of the beam alignment in the walk-off reduction scheme: black and gray lines refer to two different tilting positions of the GS mirror.

Fig. 3
Fig. 3

Walk-off performance, defined as the ratio of deviation to the mean of the photodetected reference signal within a group delay cycle, up to V g = 0.5 V . The corresponding group delay is on the top axis.

Fig. 4
Fig. 4

Dispersion compensation results for three sets of experimental data.

Equations (9)

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z p = ϕ k 0 = 2 x 0 θ ,
z g = d ϕ d k k 0 = ( 2 x 0 + 4 π m f p k 0 cos θ g ) θ ,
GVD = d 2 ϕ d k 2 k = k 0 = 8 π 2 m 2 p 2 k 0 3 cos 2 θ g ( Δ z + f θ tan θ g ) .
w 0 = f ( tan 2 θ 2 tan 2 θ 1 ) 2 f Δ θ ( cos 2 θ 1 cos 2 θ 2 ) .
w B = w cos θ B f Δ ϕ ( cos ϕ 1 cos ϕ 2 ) .
Δ ϕ = Δ ϕ 2 Δ θ = 0 ,
cos θ i cos θ g cos θ B [ ( cos 2 θ ¯ ) ( cos ϕ ¯ ) ] 2 ,
s ( z ) A 2 1 + d 2 4 exp ( 1 2 ρ 2 z 2 1 + d 2 ) ,
ρ = π 2 ln 2 Δ λ λ 2 .

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