Abstract:Abetrod-The magneto-optical Kerr-effect of a 40nm thin iron film is used t o modulate light beams of different color (e.g. red and green) u p t o 100kHz. Yielding a resolution of 35nm a t a total light power of 5 p W , the displacement between t h e two focal points of these beams is measured by t h e time difference of t h e corresponding photo diode signals. T h e relation between t h e time and a locally defined magnetization reversal of the film is achieved by a ferrite C-yoke with gradient pole shoes and … Show more
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