Optically induced transverse voltages in thin metal films |
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Authors: | R J Von Gutfeld |
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Institution: | The author is with IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598, USA |
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Abstract: | Results of experiments on laser induced voltages in metal films are summarized. The voltages are found to occur along certain directions in the plane of slant-angle vapour deposited films. A thermo-electric model based on periodic variations in the microscopic film structure, is described. The magnitude of the effect is proportional to the absorbed power/length between the contact points. Application of the films in the wavelength range 0.33–10.6μm is described and compared to more conventional detectors. A recent application, using the effect as a tool to profile non-uniformities in thin films, is also discussed. |
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