Deutsches Zentrum Fur Luft-Und Raumfahrt E.v.

Deutsches Zentrum Fuer Luft-Und Raumfahrt E.v

Deutsche Forschungsanstalt Fuer Luft- Und Raumfahrt E.v.

Thomas Hall

Adolf Giesen

Jens Mende

Jochen Speiser

Gerhard Spindler

Carsten Pargmann

Peter Schnee

An unstable optical resonator device is provided, comprising a spherical back mirror, a spherical outcoupling mirror, wherein a focal point lies between the back mirror and the outcoupling mirror, an optically active medium with a rectangular medium cross-section arranged between the back mirror and the outcoupling mirror, and a scraper, which is arranged between the back mirror and the outcoupling mirror and has a first leg and a second leg located transversely to the first leg, said legs defining a free space with a first side delimited by the first leg and a second side delimited by the second leg, wherein the first side and the second side are orthogonal to one another.

Unstable optical resonator device

In order to improve a solid-state laser, in particular a solid-state disc laser, comprising a resonator () that defines a resonator radiation field () and at least one solid-state disc () with the resonator radiation field () passing through it, in such a manner that the thermal lens effect can be at least substantially compensated, it is proposed that in reflection the resonator radiation field () strikes at least one first adaptive mirror unit (), with which a distortion of the resonator radiation field () as a result of a thermal lens effect of the at least one solid-state disc () can be substantially compensated. An adaptive mirror unit () can be configured by a heated () glass sheet () with an HR layer (), for example, or by a pressure-induced deformation by means a fluid () in a space (), which is enclosed with the mirror ().

Solid-state laser

An unstable optical resonator for an optically active medium comprising a spherical back mirror and a spherical outcoupling mirror is proposed, and an outcoupling which is asymmetrical in relation to the optical axis takes place therein.

Unstable optical resonator and laser device

Attenuator for a laser beam

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Wildberg, Germany

Thomas Hall