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A Dispersion Interferometer Based on a CO2 Laser

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Abstract

A double-pass dispersion interferometer based on a 9.6-µm CO2 laser with a sensitivity of 〈 n e l〉min ∼ 1 × 1013 cm−2 and a temporal resolution of ∼50 µ s, designed to measure linear plasma density, is described. A ZnGeP2 nonlinear crystal is used as the frequency doubler. The main advantages of the interferometer are its compactness and a low sensitivity to vibrations of optical elements. The interferometer requires no special vibration isolation. Its main components are arranged compactly on an optical bench outside the apparatus, except for a window for radiation injection and a retroreflector; these are mounted on the wall of the experimental facility's vacuum chamber. The advantages of the dispersion interferometer have been demonstrated in an experiment with a gas-dynamic trap.

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Authors and Affiliations

  1. Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia

    A. L. Solomakhin

  2. Budker Institute of Nuclear Physics, Siberian Division, Russian Academy of Sciences, pr. Akad. Lavrent'eva 11, Novosibirsk, 630090, Russia

    P. A. Bagryanskii, R. V. Voskoboinikov, P. V. Zubarev, A. N. Kvashnin, A. A. Lizunov, V. V. Maksimov & A. D. Khil'chenko

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  1. A. L. Solomakhin
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  2. P. A. Bagryanskii
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  3. R. V. Voskoboinikov
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  4. P. V. Zubarev
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  5. A. N. Kvashnin
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  6. A. A. Lizunov
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  7. V. V. Maksimov
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  8. A. D. Khil'chenko
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__________

Translated from Pribory i Tekhnika Eksperimenta, No. 5, 2005, pp. 96–106.

Original Russian Text Copyright © 2005 by Solomakhin, Bagryanskii, Voskoboinikov, Zubarev, Kvashnin, Lizunov, Maksimov, Khil'chenko.

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Solomakhin, A.L., Bagryanskii, P.A., Voskoboinikov, R.V. et al. A Dispersion Interferometer Based on a CO2 Laser. Instrum Exp Tech 48, 649–658 (2005). https://doi.org/10.1007/s10786-005-0116-9

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  • DOI: https://doi.org/10.1007/s10786-005-0116-9

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