Siemens Aktiengesellschaft

Tomas E Lock

Pawel Kluczynski

Rikard Larking

An apparatus for reducing fringe interference of light created in the optical system of a laser spectroscopy system comprising an electromagnetic actuator for generating, along a laser path, physical translational vibration of an optical element of the optical system and a control device for controlling the amplitude and frequency of said vibration. The optical element is arranged on a cantilever body which is, at one end, attached to a base by a flexural pivot and, at the other free end, coupled to the electromagnetic actuator, and the control device includes a controller that controls the amplitude of the vibration and a vibration sensor attached to the cantilever body and providing the actual vibration value to the controller to improve fringe interference reduction, especially with longer wavelengths.

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Mölndal, Sweden

Tomas E Lock