Chinese Optics Letters, 2019, 17 (5): 051406, Published Online: May. 20, 2019
Monolithic LiF or MgF2 lens-window-prism device for coherent 10.7 eV beam source with 1 MHz repetition rate
140.7240 UV, EUV, and X-ray lasers 190.2620 Harmonic generation and mixing 320.7090 Ultrafast lasers
Abstract
A monolithic lens-window-prism (LWP) device, made of lithium fluoride (LiF) or magnesium fluoride (MgF2), was proposed. When either of the devices was fixed onto one end of a gas cell filled with Xe, it becomes a “wedge-crystal”-like device and was used to convert a 1 MHz femtosecond 347 nm laser to its third harmonic radiation at 10.7 eV. This led to an improved beam profile and a more compact and less lossy configuration. A stable output power of ~11 μW was demonstrated for 2 h using LiF-LWP. In addition, MgF2-LWP was also verified for its practicability at 10.7 eV.
Zhigang Zhao, Kenta Kuroda, Ayumi Harasawa, Takeshi Kondo, Shik Shin, Yohei Kobayashi. Monolithic LiF or MgF2 lens-window-prism device for coherent 10.7 eV beam source with 1 MHz repetition rate[J]. Chinese Optics Letters, 2019, 17(5): 051406.