Abstract

A compact UV hyperspectral imager can be designed with an acousto-optic tunable filter (AOTF) installed in front of an enhanced CCD camera. Tellurium dioxide (TeO2) is the most commonly used crystal for AOTFs from 0.4 to 4μm. We conducted an experiment to determine the UV spectral response of an imaging TeO2 AOTF in tandem with a known KDP AOTF and obtained good-quality hyperspectral images by using the TeO2 filter down to 365 nm. We compared the performance of the TeO2 filter-based hyperspectral imager with an imager based on a KDP filter because currently the latter is the best available material for the UV, and we found the performance of the TeO2 imager in the range 355–480 nm to be superior to that of a KDP imager. We present our experiments and the results obtained.

© 2005 Optical Society of America

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References

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  1. J. Xu and R. Stroud, Acousto-Optic Devices (Wiley, New York, 1992).
  2. A. Goutzoulis and D. Pape, Design and Fabrication of Acousto-Optic Devices (Marcel Dekker, New York, 1994).
  3. I. C. Chang, Appl. Phys. Lett. 25, 370 (1974).
    [Crossref]
  4. V. Voloshinov and N. Gupta, Proc. SPIE 3900, 68 (1999).
  5. N. Gupta and V. Voloshinov, Appl. Opt. 43, 2752 (2004).
    [Crossref] [PubMed]
  6. V. Voloshinov and N. Gupta, Appl. Opt. 43, 3901 (2004).
    [Crossref] [PubMed]
  7. N. Uchida, Phys. Rev. B 4, 3736 (1971).
    [Crossref]
  8. J. G. Berny and J. P. Bourgoin, Opt. Commun. 6, 383 (1972).
    [Crossref]

2004 (2)

1999 (1)

V. Voloshinov and N. Gupta, Proc. SPIE 3900, 68 (1999).

1974 (1)

I. C. Chang, Appl. Phys. Lett. 25, 370 (1974).
[Crossref]

1972 (1)

J. G. Berny and J. P. Bourgoin, Opt. Commun. 6, 383 (1972).
[Crossref]

1971 (1)

N. Uchida, Phys. Rev. B 4, 3736 (1971).
[Crossref]

Berny, J. G.

J. G. Berny and J. P. Bourgoin, Opt. Commun. 6, 383 (1972).
[Crossref]

Bourgoin, J. P.

J. G. Berny and J. P. Bourgoin, Opt. Commun. 6, 383 (1972).
[Crossref]

Chang, I. C.

I. C. Chang, Appl. Phys. Lett. 25, 370 (1974).
[Crossref]

Goutzoulis, A.

A. Goutzoulis and D. Pape, Design and Fabrication of Acousto-Optic Devices (Marcel Dekker, New York, 1994).

Gupta, N.

Pape, D.

A. Goutzoulis and D. Pape, Design and Fabrication of Acousto-Optic Devices (Marcel Dekker, New York, 1994).

Stroud, R.

J. Xu and R. Stroud, Acousto-Optic Devices (Wiley, New York, 1992).

Uchida, N.

N. Uchida, Phys. Rev. B 4, 3736 (1971).
[Crossref]

Voloshinov, V.

Xu, J.

J. Xu and R. Stroud, Acousto-Optic Devices (Wiley, New York, 1992).

Appl. Opt. (2)

Appl. Phys. Lett. (1)

I. C. Chang, Appl. Phys. Lett. 25, 370 (1974).
[Crossref]

Opt. Commun. (1)

J. G. Berny and J. P. Bourgoin, Opt. Commun. 6, 383 (1972).
[Crossref]

Phys. Rev. B (1)

N. Uchida, Phys. Rev. B 4, 3736 (1971).
[Crossref]

Proc. SPIE (1)

V. Voloshinov and N. Gupta, Proc. SPIE 3900, 68 (1999).

Other (2)

J. Xu and R. Stroud, Acousto-Optic Devices (Wiley, New York, 1992).

A. Goutzoulis and D. Pape, Design and Fabrication of Acousto-Optic Devices (Marcel Dekker, New York, 1994).

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Figures (4)

Fig. 1
Fig. 1

Schematic drawing of the TeO 2 filter.

Fig. 2
Fig. 2

Measured and calculated tuning curves for the TeO 2 filter.

Fig. 3
Fig. 3

Experimental arrangement that uses TeO 2 and KDP filters in tandem to measure the spectral response of a TeO 2 filter.

Fig. 4
Fig. 4

Spectral images obtained with the TeO 2 filter.

Equations (2)

Equations on this page are rendered with MathJax. Learn more.

λ = ( V f ) [ n i sin θ ( n o 2 n i 2 cos 2 θ ) 1 2 ] ,
n i = n o n e [ n e 2 cos 2 ( θ + α ) + n o 2 sin 2 ( θ + α ) ] 1 2 .

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