Lambda Physik Ag

Thomas Schröeder

Uwe Stamm

Juergen Kleinschmidt

Dirk Basting

Wolfgang Zschocke

Matthias Kramer

A line-narrowing module for a laser includes a prism beam expander and a grating preferably attached to a heat sink. A pressure-controlled enclosure filled with an inert gas seals the grating and/or other elements of the line-narrowing module. The pressure in the enclosure is adjusted for tuning the wavelength. Preferably, the pressure is controlled by controlling the flow of an inert gas through the enclosure. A pump may be used, or an overpressure flow may be used. Alternatively, a prism of the beam expander or an etalon may be rotatable for tuning the wavelength.

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Göttingen, Germany

Thomas Schröeder