Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1975-12-05
1977-01-04
Britton, Howard W.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
358201, G02F 133, G02F 200, H04B 900
Patent
active
040015777
ABSTRACT:
Method and apparatus for causing light to interact with surface acoustic waves so that the light is either scattered out of or coupled into an optical wave guide. In the case of scattering when the light is propagating in an optical wave guide and chirped surface acoustic waves interact with the light, the light is scattered out of the optical wave guide into a focused beam. The focused beam of light travels in a path parallel to the surface acoustic waves and at the same velocity as the acoustic waves. The focused beam can scan objects to obtain electrical signals corresponding to the optical image of the objects and also the beam can be focused on a plurality of photodetectors to multiplex the light. In the case of coupling when the light is incident on an optical wave guide and the frequency of the chirped surface acoustic waves is selectively varied, the light is selectively coupled into the optical wave guide in a corresponding manner. The selective coupling of the light permits the frequency spectrum and the angular distribution of the light to be analyzed.
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Albanese Andres
Quate Calvin F.
Britton Howard W.
The Board of Trustees of Leland Stanford Junior University
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