High contrast optical switching in vanadium dioxide thin films

Thermochromic vanadium dioxide thin films prepared by radio-frequency sputtering exhibit controllable transmittance at 1550 nm with a dynamic range exceeding 10 3 . Efficient optical control with a laser beam at 532 nm is demonstrated with intensities as low as 3 W/cm 2. Optical switch-on times as s...

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Bibliographic Details
Published in:	Optics communications Vol. 281; no. 24; pp. 6024 - 6027
Main Authors:	Ben-Messaoud, T., Landry, G., Gariépy, J.P., Ramamoorthy, B., Ashrit, P.V., Haché, A.
Format:	Journal Article
Language:	English
Published:	Amsterdam Elsevier B.V 15-12-2008 Elsevier
Subjects:	Exact sciences and technology Fundamental areas of phenomenology (including applications) Nonlinear optics Optical bistability, multistability and switching, including local field effects Optical computers, logic elements, interconnects, switches; neural networks Optical elements, devices, and systems Optical switching Optics Phase transition Physics Semiconductor-to-metal phase transition Vanadium dioxide film Semiconductor-to-metal phase transition Vanadium dioxide film Optical switching Phase transition Optical switches Laser beams Transmittance Positive ions Vanadium Oxides Thin films Multicharged ions Oxygen Atomic ions Visible radiation
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Summary:	Thermochromic vanadium dioxide thin films prepared by radio-frequency sputtering exhibit controllable transmittance at 1550 nm with a dynamic range exceeding 10 3 . Efficient optical control with a laser beam at 532 nm is demonstrated with intensities as low as 3 W/cm 2. Optical switch-on times as short as 100 μs are reported.
ISSN:	0030-4018 1873-0310
DOI:	10.1016/j.optcom.2008.09.027