Monolithic LiF or MgF<sub>2</sub> lens-window-prism device for coherent 10.7  eV beam source with 1 MHz repetition rate

Zhigang Zhao; Kenta Kuroda; Ayumi Harasawa; Takeshi Kondo; Shik Shin; Yohei Kobayashi

doi:doi:10.3788/COL201917.051406

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 Download： 514次

Zhigang Zhao ^1,2,*Kenta Kuroda ¹Ayumi Harasawa ¹Takeshi Kondo ¹Shik Shin ¹Yohei Kobayashi ¹

Author Affiliations

¹ The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan

² Current affiliation: School of Information Science and Engineering, Shandong University, Qingdao 266237, China

Figures & Tables

Fig. 1. Schematic diagram of the “wedge-crystal”-like gas cell (lower part), integrated with the monolithic lens-window-prism (LPW) device. (a) A photograph of the custom-made LiF-LPW device. (b) The integrated flange that can be fixed onto the other end of the gas cell.

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Fig. 2. Schematic diagram of the experimental setup for the generation of a 10.7 eV beam source. The input laser is from a homemade 347 nm femtosecond laser with a repetition rate of 1 MHz. (a) The previously obtained beam profile. (b) The beam profile obtained with the LWP device. Phototube: Hamamatsu Photonics R1187.

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Fig. 3. Beam profiles on the fluorescence plate taken with a CCD camera when different UV powers were used.

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Fig. 4. Experimentally measured decay of the average powers using LiF-LWP and ${MgF}_{2}$ -LWP in vacuum conditions. The black lines are fitted results using exponential decay. For both cases, the normalized intensity 1.0 corresponds to a real power of 8 μW.

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Fig. 5. Average power of the 10.7 eV beam with the chamber filled with nitrogen. LiF-LWP was used here.

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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.

Monolithic LiF or MgF₂ lens-window-prism device for coherent 10.7 eV beam source with 1 MHz repetition rate Download： 514次

Fig. 1. Schematic diagram of the “wedge-crystal”-like gas cell (lower part), integrated with the monolithic lens-window-prism (LPW) device. (a) A photograph of the custom-made LiF-LPW device. (b) The integrated flange that can be fixed onto the other end of the gas cell.

Fig. 3. Beam profiles on the fluorescence plate taken with a CCD camera when different UV powers were used.

Fig. 4. Experimentally measured decay of the average powers using LiF-LWP and ${MgF}_{2}$ -LWP in vacuum conditions. The black lines are fitted results using exponential decay. For both cases, the normalized intensity 1.0 corresponds to a real power of 8 μW.

Fig. 5. Average power of the 10.7 eV beam with the chamber filled with nitrogen. LiF-LWP was used here.

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Monolithic LiF or MgF2 lens-window-prism device for coherent 10.7 eV beam source with 1 MHz repetition rate Download： 514次

Fig. 1. Schematic diagram of the “wedge-crystal”-like gas cell (lower part), integrated with the monolithic lens-window-prism (LPW) device. (a) A photograph of the custom-made LiF-LPW device. (b) The integrated flange that can be fixed onto the other end of the gas cell.

Fig. 3. Beam profiles on the fluorescence plate taken with a CCD camera when different UV powers were used.

Fig. 4. Experimentally measured decay of the average powers using LiF-LWP and MgF2-LWP in vacuum conditions. The black lines are fitted results using exponential decay. For both cases, the normalized intensity 1.0 corresponds to a real power of 8 μW.

Fig. 5. Average power of the 10.7 eV beam with the chamber filled with nitrogen. LiF-LWP was used here.

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Monolithic LiF or MgF₂ lens-window-prism device for coherent 10.7 eV beam source with 1 MHz repetition rate Download： 514次

Fig. 4. Experimentally measured decay of the average powers using LiF-LWP and ${MgF}_{2}$ -LWP in vacuum conditions. The black lines are fitted results using exponential decay. For both cases, the normalized intensity 1.0 corresponds to a real power of 8 μW.