Abstract

A new method of ultrafast dark-field correlation interferometry from reflective microscopic objects is described. A 120-fs single-shot registration is achieved with a dynamic range of >35 dB, a sensitivity of <−50 dB, and a resolution of 15 μm. To demonstrate the potential of the method, we measured the thickness of single-mode fiber cladding to be 19 μm.

© 1996 Optical Society of America

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References

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1995

I. Zeylikovich, Q. D. Liu, G. Bai, N. Zhadin, A. Gorokhovsky, R. R. Alfano, Opt. Commun. 115, 485 (1995).
[CrossRef]

1992

1989

K. G. Spears, J. Serafin, N. H. Abramson, X. Zhu, H. Bjelkhagen, IEEE Trans. Biomed. Eng. 36, 1210 (1989).
[CrossRef] [PubMed]

1987

Abramson, N. H.

K. G. Spears, J. Serafin, N. H. Abramson, X. Zhu, H. Bjelkhagen, IEEE Trans. Biomed. Eng. 36, 1210 (1989).
[CrossRef] [PubMed]

Alfano, R. R.

I. Zeylikovich, Q. D. Liu, G. Bai, N. Zhadin, A. Gorokhovsky, R. R. Alfano, Opt. Commun. 115, 485 (1995).
[CrossRef]

Bai, G.

I. Zeylikovich, Q. D. Liu, G. Bai, N. Zhadin, A. Gorokhovsky, R. R. Alfano, Opt. Commun. 115, 485 (1995).
[CrossRef]

Bjelkhagen, H.

K. G. Spears, J. Serafin, N. H. Abramson, X. Zhu, H. Bjelkhagen, IEEE Trans. Biomed. Eng. 36, 1210 (1989).
[CrossRef] [PubMed]

Carr, S.

Davies, D. E. N.

Fujimoto, J. G.

Gorokhovsky, A.

I. Zeylikovich, Q. D. Liu, G. Bai, N. Zhadin, A. Gorokhovsky, R. R. Alfano, Opt. Commun. 115, 485 (1995).
[CrossRef]

Hee, M. R.

Huang, D.

Lin, C. P.

Liu, Q. D.

I. Zeylikovich, Q. D. Liu, G. Bai, N. Zhadin, A. Gorokhovsky, R. R. Alfano, Opt. Commun. 115, 485 (1995).
[CrossRef]

Puliafito, C. A.

Serafin, J.

K. G. Spears, J. Serafin, N. H. Abramson, X. Zhu, H. Bjelkhagen, IEEE Trans. Biomed. Eng. 36, 1210 (1989).
[CrossRef] [PubMed]

Spears, K. G.

K. G. Spears, J. Serafin, N. H. Abramson, X. Zhu, H. Bjelkhagen, IEEE Trans. Biomed. Eng. 36, 1210 (1989).
[CrossRef] [PubMed]

Swanson, E. A.

Youngquist, R. C.

Zeylikovich, I.

I. Zeylikovich, Q. D. Liu, G. Bai, N. Zhadin, A. Gorokhovsky, R. R. Alfano, Opt. Commun. 115, 485 (1995).
[CrossRef]

Zhadin, N.

I. Zeylikovich, Q. D. Liu, G. Bai, N. Zhadin, A. Gorokhovsky, R. R. Alfano, Opt. Commun. 115, 485 (1995).
[CrossRef]

Zhu, X.

K. G. Spears, J. Serafin, N. H. Abramson, X. Zhu, H. Bjelkhagen, IEEE Trans. Biomed. Eng. 36, 1210 (1989).
[CrossRef] [PubMed]

IEEE Trans. Biomed. Eng.

K. G. Spears, J. Serafin, N. H. Abramson, X. Zhu, H. Bjelkhagen, IEEE Trans. Biomed. Eng. 36, 1210 (1989).
[CrossRef] [PubMed]

Opt. Commun.

I. Zeylikovich, Q. D. Liu, G. Bai, N. Zhadin, A. Gorokhovsky, R. R. Alfano, Opt. Commun. 115, 485 (1995).
[CrossRef]

Opt. Lett.

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Figures (4)

Fig. 1
Fig. 1

Schematic diagram of the experimental setup: MM’s, transfer mirrors; M’s, mirrors; ND, neutral-density variable filter; BS’s, beam splitters; L, lens; O, 5× focusing objective; G, reflection grating; AR, amplifier system; CPM, colliding-pulse mode-locked laser.

Fig. 2
Fig. 2

Dark-field interference dynamic range (curves 1–3) and single-shot measurements (curves 5 and 6). The output signal without subtraction of the reference pattern is shown by curve 4.

Fig. 3
Fig. 3

System sensitivity (curves 1–5). Curves 1 and 2 correspond to a ND filter of O.D. 3.5 and curves 3–5 to a filter of O.D. 5.

Fig. 4
Fig. 4

Measurement of the cladding thickness of the single-mode fiber: a, a cross section of the fiber, showing core and cladding, and b, the interferometric reflectance profiles across the fiber.

Equations (7)

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Δ = = 2 x sin α = 2 λx / p ,
W s ( τ ) { | E s ( t τ ) exp [ i 2 π ( x sin α ) / λ ] + E r ( t ) exp ( i 2 πx sin α / λ ) | 2 } d t .
W s ( τ ) [ | E r ( t ) | 2 + | E s | 2 ] d t + 2 Re [ g ( τ ) ] ,
g ( τ ) = E s * ( t τ ) E r ( t ) d t .
W s ( τ ) [ | E r ( t ) | 2 + | E s ( t ) | 2 ] d t + 2 ( | E i ( t ) | 2 d t ) × ρ r j ρ sj Re [ γ ( τ τ j ) ] ,
W r ( τ ) [ | E r ( t ) | 2 + | E s ( t ) | 2 ] d t .
W f ( τ ) ( | E i ( t ) | 2 d t ) ρ r j ρ sj | γ ( τ τ j ) | .

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