Magnetooptic Beam Shifter and Polarization Converter Using Wedge Etalons

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概要

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• We present a magnetooptic beam shifter (beam scanner) and polarization converter using multiple beam interference fringes from wedge etalons with high finesse. A theoretical expression for the fringe shift and for the polarization conversion is derived. Experiments were made with an etalon of refractive index 1.69, Verdet constant -0.24 mim/cm・Oe, thickness 2 mm, surface reflectivity 95%, and wedge angle 1.2 sec, using an He-Ne 633 nm laser light. The fringe shift obtained is 0.24 mm/k Oe. The degree of polarization conversion obtained for small magnetic fields (H≲1 k Oe) is 12%(k Oe)^2, which is 7.6x10^2 times as large as the single-pass Faraday rotation. Very good agreement is obtained between the experimental and theoretical results.

• 社団法人応用物理学会の論文
• 1979-01-05

著者

• Yoshino Toshihiko

  Instisute Of Industrial Science University Of Tokyo

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