| Autor: |
Loktev, M. Yu., Loktev, M.Yu., Belopukhov, V. N., Belopukhov, V.N., Vladimirov, F. L., Vladimirov, F.L., Vdovin, G. V., Vdovin, G.V., Love, G. D., Love, G.D., Naumov, A. F., Naumov, A.F. |
| Předmět: |
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| Zdroj: |
Review of Scientific Instruments; Sep2000, Vol. 71 Issue 9, 4 Black and White Photographs, 8 Diagrams, 1 Chart, 10 Graphs |
| Abstrakt: |
We describe two electro-optical systems for adaptive focusing of linearly polarized light. The aperture size is 5 mm and the focal length can be varied from 1 to 4 m for wavelengths from 0.663 to 0.85 μm. The first is a commercially available system including a PC compatible control unit and software, and an adaptive liquid crystal lens. The other is an experimental system consisting of a self-contained unit with an autonomous power supply and an adaptive lens. The safe operating limit in the visible region is 10 W/cm2 with a transmission of 70% without antireflection coating. The switching speed of focus variation from 2 to 1 m and from 1 to 2 m is 780 and 860 ms, respectively. The operating principles of the spherical adaptive lenses and their control units are described. Phase aberrations of the lenses were measured by a Zygo phase shifting interferometer, and the results are presented. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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