摘要:
Method for obtaining extreme ultraviolet radiation and a source thereof, application in lithography.According to the invention, at least a solid target (28) is used, emitting extreme ultraviolet radiation by interaction with a laser beam focussed on a face (30) of the target. This target is able to emit a portion of the radiation from the opposite face (37) and this portion is collected and transmitted.
摘要:
Lithography device using a source of radiation in the extreme ultraviolet range and multi-layered mirrors with a broad spectral band within this range. Each mirror (24, 26, 29) includes a stack of layers of a first material and layers of a second material alternating with the first material. The first material has an atomic number greater than that of the second material. The thickness of pairs of adjacent layers is a monotonic function of the depth in the stack. The source (22) comprises at least one target (28) which emits the radiation by interAction with a laser beam focused on one of its faces. A part (36) of the radiation emitted from the other face is used. The invention is applicable to the manufacture of integrated circuits with a high degree of integration.