Abstract

We demonstrate a new scanning femtosecond pulse-shaping technique that allows pulse shapes to be modulated at kilohertz rates. This technique is particularly useful for lock-in measurements in which the signal is synchronized with the alternating pulse shapes. The pulse-shape lock-in technique is demonstrated in resonant coherent anti-Stokes Raman scattering, where it is shown to significantly improve the ratio of the resonant signal to both the nonresonant background and to noise.

© 2004 Optical Society of America

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2003 (1)

P. Tian, D. Keusters, Y. Suzaki, and W. S. Warren, Science 300, 1553 (2003).
[CrossRef] [PubMed]

2002 (1)

N. Dudovich, D. Oron, and Y. Silberberg, Nature 418, 512 (2002).
[CrossRef] [PubMed]

2001 (2)

J. Cheng, A. Volkmer, L. D. Book, and X. S. Xie, J. Phys. Chem. B 105, 1277 (2001).

T. Brixner and G. Gerber, Opt. Lett. 26, 557 (2001).
[CrossRef]

2000 (2)

1999 (1)

1997 (1)

1994 (1)

1993 (1)

1990 (2)

A. M. Weiner, D. E. Leaird, J. S. Patel, and J. R. Wullert, Opt. Lett. 15, 326 (1990).
[CrossRef]

A. M. Weiner, D. E. Leaird, G. P. Wiederrecht, and K. A. Nelson, Science 247, 1317 (1990).
[CrossRef] [PubMed]

Backus, S.

Book, L. D.

J. Cheng, A. Volkmer, L. D. Book, and X. S. Xie, J. Phys. Chem. B 105, 1277 (2001).

Bouma, B. E.

Brixner, T.

Cheng, J.

J. Cheng, A. Volkmer, L. D. Book, and X. S. Xie, J. Phys. Chem. B 105, 1277 (2001).

Cheng, Z.

Chu, K.

Dienes, A.

Dudovich, N.

N. Dudovich, D. Oron, and Y. Silberberg, Nature 418, 512 (2002).
[CrossRef] [PubMed]

Fujimoto, J. G.

Gerber, G.

Goswami, D.

Heritage, J.

Hillegas, C. W.

Kapteyn, H.

Keusters, D.

P. Tian, D. Keusters, Y. Suzaki, and W. S. Warren, Science 300, 1553 (2003).
[CrossRef] [PubMed]

Kwong, K.

Laude, V.

Leaird, D. E.

A. M. Weiner, D. E. Leaird, J. S. Patel, and J. R. Wullert, Opt. Lett. 15, 326 (1990).
[CrossRef]

A. M. Weiner, D. E. Leaird, G. P. Wiederrecht, and K. A. Nelson, Science 247, 1317 (1990).
[CrossRef] [PubMed]

Maginnis, K.

Mourou, G.

Murnane, M.

Nelson, K. A.

A. M. Weiner, D. E. Leaird, G. P. Wiederrecht, and K. A. Nelson, Science 247, 1317 (1990).
[CrossRef] [PubMed]

Oron, D.

N. Dudovich, D. Oron, and Y. Silberberg, Nature 418, 512 (2002).
[CrossRef] [PubMed]

Patel, J. S.

Russek, U.

Silberberg, Y.

N. Dudovich, D. Oron, and Y. Silberberg, Nature 418, 512 (2002).
[CrossRef] [PubMed]

Spielmann, Ch.

Strickland, D.

Suzaki, Y.

P. Tian, D. Keusters, Y. Suzaki, and W. S. Warren, Science 300, 1553 (2003).
[CrossRef] [PubMed]

Tearney, G. J.

Tian, P.

P. Tian, D. Keusters, Y. Suzaki, and W. S. Warren, Science 300, 1553 (2003).
[CrossRef] [PubMed]

Tournois, P.

Tull, J. X.

Vdovin, G.

Verluise, F.

Volkmer, A.

J. Cheng, A. Volkmer, L. D. Book, and X. S. Xie, J. Phys. Chem. B 105, 1277 (2001).

Warren, W. S.

Weiner, A. M.

A. M. Weiner, Rev. Sci. Instrum. 71, 1929 (2000).
[CrossRef]

A. M. Weiner, D. E. Leaird, G. P. Wiederrecht, and K. A. Nelson, Science 247, 1317 (1990).
[CrossRef] [PubMed]

A. M. Weiner, D. E. Leaird, J. S. Patel, and J. R. Wullert, Opt. Lett. 15, 326 (1990).
[CrossRef]

Wiederrecht, G. P.

A. M. Weiner, D. E. Leaird, G. P. Wiederrecht, and K. A. Nelson, Science 247, 1317 (1990).
[CrossRef] [PubMed]

Wullert, J. R.

Xie, X. S.

J. Cheng, A. Volkmer, L. D. Book, and X. S. Xie, J. Phys. Chem. B 105, 1277 (2001).

Yankelevich, D.

Zeek, E.

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Figures (3)

Fig. 1
Fig. 1

Schematic representation of the scanning shaper. Inset, lithographic mask for the two-dimensional reflective phase filter.

Fig. 2
Fig. 2

SHG measurement with modulated pulse shapes at a rate of 2.5 kHz. (a) SHG signal. The mirror oscillates the spectrum between flat and modulated regions on the phase mask. (b) Scanning mirror angular position.

Fig. 3
Fig. 3

Experimental CARS measurements of iodomethane (a single resonance at 523 cm-1). (a) Circular data points, CARS signal as a function of mask position, when scanning mirror is not moving; triangular data points, CARS signal with lock-in on the pulse shape. Small angle (0.08° amplitude scanning mirror modulation at 1000 Hz). (b) Lock-in CARS as a function of the scanning amplitude.

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