Abstract

A multichannel IR spectrometer using a standard silicon CCD array is demonstrated. Sum frequency generation between an ultrafast optical pulse and a frequency-dispersed IR beam generates a spatially extended optical signal that is collected on a generic CCD video camera. This method provides an inexpensive and efficient alternative to conventional multichannel IR arrays.

© 2005 Optical Society of America

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References

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2003

2000

P. Hamm, M. Lim, W. F. DeGrado, and R. M. Hochstrasser, J. Chem. Phys. 112, 1907 (2000).
[CrossRef]

1997

1995

1994

1989

Arrivo, S. M.

Bailey, P. D.

Barton, R.

Chériaux, G.

DeGrado, W. F.

P. Hamm, M. Lim, W. F. DeGrado, and R. M. Hochstrasser, J. Chem. Phys. 112, 1907 (2000).
[CrossRef]

Demirdoven, N.

M. Khalil, N. Demirdoven, and A. Tokmakoff, Phys. Rev. Lett. 86, 2154 (2003).
[CrossRef]

Dougherty, T. P.

Dyer, J.

George, M. W.

Grills, D. C.

Hamm, P.

P. Hamm, M. Lim, W. F. DeGrado, and R. M. Hochstrasser, J. Chem. Phys. 112, 1907 (2000).
[CrossRef]

P. Hamm, S. Wiemann, M. Zurek, and W. Zinth, Opt. Lett. 19, 1642 (1994).
[CrossRef] [PubMed]

Heilweil, E. J.

Hochstrasser, R. M.

P. Hamm, M. Lim, W. F. DeGrado, and R. M. Hochstrasser, J. Chem. Phys. 112, 1907 (2000).
[CrossRef]

Joffre, M.

Khalil, M.

M. Khalil, N. Demirdoven, and A. Tokmakoff, Phys. Rev. Lett. 86, 2154 (2003).
[CrossRef]

Kleiman, V. D.

Kwok, W. M.

Lepetit, L.

Lim, M.

P. Hamm, M. Lim, W. F. DeGrado, and R. M. Hochstrasser, J. Chem. Phys. 112, 1907 (2000).
[CrossRef]

Ma, C.

Matousek, P.

Parker, A. W.

Phillips, D.

Subramaniam, N.

Tokmakoff, A.

M. Khalil, N. Demirdoven, and A. Tokmakoff, Phys. Rev. Lett. 86, 2154 (2003).
[CrossRef]

Towrie, M.

Weinstein, J. A.

Wiemann, S.

Zinth, W.

Zurek, M.

Appl. Spectrosc.

J. Chem. Phys.

P. Hamm, M. Lim, W. F. DeGrado, and R. M. Hochstrasser, J. Chem. Phys. 112, 1907 (2000).
[CrossRef]

J. Opt. Soc. Am. B

Opt. Lett.

Phys. Rev. Lett.

M. Khalil, N. Demirdoven, and A. Tokmakoff, Phys. Rev. Lett. 86, 2154 (2003).
[CrossRef]

Other

Commercially available cameras can have quantum efficiencies close to unity (?10?4? lx), thus increasing the spectrometer sensitivity by almost 2 orders of magnitude without changing the input 800 nm intensity.

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Figures (4)

Fig. 1
Fig. 1

Experimental setup. G, grating; L, focusing mirror; HR1, 800 HR/IR transmit; HR2, 800 HR/optical transmit; BP, bandpass filter; thick solid line, IR beam; shaded area, 800 nm beam; dashed line, SFG.

Fig. 2
Fig. 2

Raw upconverted spectral interferometry of an IR pulse train with a time delay of 16.5 ps.

Fig. 3
Fig. 3

(left) Frequency calibration of CCD array. (right) FFT of pixel 293.

Fig. 4
Fig. 4

Dual channel spectrometer. (a) Differential absorbance of vibrational resonance in acetonitrile. The upper (lower) curve is from a raw (smoothed) CCD image. The solid (dashed) curve is from an upconverted CCD image (FTIR). (b) Raw CCD image.

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