Circularly polarizing collimation structure of a non-magnetic TO encapsulation

Abstract

A circularly polarizing collimation structure of a non-magnetic TO encapsulation, comprising a tube base (100) on which a laser system (110) is arranged, wherein a tube cap (200) is arranged coaxially on the tube base (100) and a lens (500) is arranged in the tube cap (200), characterized in that the circularly polarizing collimation structure further comprises a wave plate (400) and a polarization adjustment component, wherein the polarization adjustment component is rotatably arranged on the tube cap (200), wherein an axis of rotation of the polarization adjustment component is coaxial to the tube cap (200), and wherein the wave plate (400) is arranged on the polarization adjustment component, wherein by rotating the polarization adjustment component the angle of an optical axis of the wave plate (400) is changed in order to adjust the polarization direction of circularly polarized light.

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