A mirror-lens objective has been developed that focuses a powerful laser beam with a planar wavefront into a straight line 10 mm long. The objective is intended for the creation of extended plasma objects. The construction involves an improved version of Maksutov's meniscus system, based on a toroidal mirror. A sample with an effective diameter of 130 mm and a relative aperture of 1:2.4 has been fabricated and investigated.

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