Abstract

We report a high-power wavelength-swept laser source for multichannel optical coherence tomography (OCT) imaging. Wavelength tuning is performed by a compact telescope-less polygon-based filter in Littman arrangement. High output power is achieved by incorporating two serial semiconductor optical amplifiers in the laser cavity in Fourier domain mode-locked configuration. The measured wavelength tuning range of the laser is 111nm centered at 1329nm, coherence length of 5.5mm, and total average output power of 131mW at 43kHz sweeping rate. Multichannel simultaneous OCT imaging at an equivalent A-scan rate of 258kHz is demonstrated.

© 2009 Optical Society of America

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References

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2009 (1)

S. Makita, M. Yamanari, and Y. Yasuno, Proc. SPIE 7372, 73721M (2009).
[CrossRef]

2008 (3)

2006 (2)

2005 (1)

2004 (1)

2003 (4)

Adler, D. C.

Boudoux, C.

Bouma, B. E.

Choma, M. A.

Chong, C.

C. Chong, A. Morosawa, and T. Sakai, IEEE J. Sel. Top. Quantum Electron. 14, 235 (2008).
[CrossRef]

De Boer, J. F.

Fujimoto, J. G.

Gordon, M. L.

Gu, X.

Huber, R.

Iftimia, N.

Izatt, J. A.

Liu, G. Y.

Lo, S.

Makita, S.

S. Makita, M. Yamanari, and Y. Yasuno, Proc. SPIE 7372, 73721M (2009).
[CrossRef]

Marcon, N. E.

Mariampillai, A.

Mok, A.

Morosawa, A.

C. Chong, A. Morosawa, and T. Sakai, IEEE J. Sel. Top. Quantum Electron. 14, 235 (2008).
[CrossRef]

Motaghian Nezam, S. M. R.

Munce, N.

Munce, N. R.

Oh, W. Y.

Pekar, J.

Qi, B.

Sakai, T.

C. Chong, A. Morosawa, and T. Sakai, IEEE J. Sel. Top. Quantum Electron. 14, 235 (2008).
[CrossRef]

Sarunic, M. V.

Seng-Yue, E.

Standish, B. A.

Tearney, G. J.

Vitkin, I. A.

Wilson, B. C.

Wojtkowski, M.

Yamanari, M.

S. Makita, M. Yamanari, and Y. Yasuno, Proc. SPIE 7372, 73721M (2009).
[CrossRef]

Yang, C.

Yang, V. X. D.

Yasuno, Y.

S. Makita, M. Yamanari, and Y. Yasuno, Proc. SPIE 7372, 73721M (2009).
[CrossRef]

Yun, S. H.

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Figures (3)

Fig. 1
Fig. 1

(a) Schematic diagram of the polygon filter configuration. Sweep direction is in increasing wavelengths. (b) Configuration of the ring cavity laser for multichannel SS-OCT. PC, polarization controller; SOA, semiconductor optical amplifier; OC, optical circulator.

Fig. 2
Fig. 2

(a) Spectra and (b) average output power versus injection current of the FDML laser at the first and second output. (c) Point-spread function at different depths up to 3.5 mm for laser outputs (i) one and (ii) two. The dotted lines mark the intensity at zero delay and at 6 dB drop. (d) Interference signal at a depth of 1.5 mm showing three complete tuning cycles.

Fig. 3
Fig. 3

Structural image of the human nail fold acquired using the MOCT system. The image depth is 1.5 mm . Each channel spans a distance of 250 μ m and is separated by a dotted line.

Equations (1)

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FSR = d Δ θ cos ( θ 0 ) ,

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