Laser Technology, Volume. 49, Issue 3, 328(2025)
Research progress on infrared laser driven extreme ultraviolet lithography source
A 13.5 nm extreme ultraviolet light source produced by the laser driven plasma is used in today's most advanced lithography machines and chip manufacturing. Generally, a 10.6 μm CO2 gas laser is the driving light of commercial extreme ultraviolet lithography. In the future, solid-state lasers are expected to become a new generation of driving light sources due to their high plug efficiency and strong output power/energy scalability. The physical process of laser-plasma interaction for producing extreme ultraviolet light was summarized. The research progress of 10.6 μm CO2 gas laser 1 μm and 2 μm solid-state lasers in driving plasma to produce extreme ultraviolet light and optical system was reviewed. The advantages of 1 μm and 2 μm solid-state lasers as driving light sources were emphatically discussed. On this basis, the research prospect of infrared laser driven extreme ultraviolet lithography source is prospected.
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LYU Tianhao, SONG Yanjie, ZONG Nan, ZHANG Shenjin, BO Yong, PENG Qinjun. Research progress on infrared laser driven extreme ultraviolet lithography source[J]. Laser Technology, 2025, 49(3): 328
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Received: Jun. 12, 2024
Accepted: Jul. 11, 2025
Published Online: Jul. 11, 2025
The Author Email: ZONG Nan (zongnan@mail.ipc.ac)