Metrology for sub-Rayleigh-length target positioning in ∼1022 W/cm2 laser-plasma experiments

被引：3

作者：

Vishnyakov, E. A. ^{[1
]}

Sagisaka, A. ^{[2
]}

Ogura, K. ^{[2
]}

Esirkepov, T. Zh. ^{[2
]}

Gonzalez-Izquierdo, B. ^{[2
]}

Armstrong, C. D. ^{[3
]}

Pikuz, T. A. ^{[4
]}

Pikuz, S. A. ^{[5
]}

Yan, W. ^{[6
,7
]}

Jeong, T. M. ^{[1
]}

Singh, S. ^{[8
,9
]}

Hadjisolomou, P. ^{[1
]}

Finke, O. ^{[1
]}

Grittani, G. M. ^{[1
]}

Nevrkla, M. ^{[1
,10
]}

Lazzarini, C. M. ^{[1
,10
]}

Velyhan, A. ^{[1
]}

Hayakawa, T. ^{[2
,11
]}

Fukuda, Y. ^{[2
]}

Koga, J. K. ^{[2
]}

Ishino, M. ^{[2
]}

Kondo, K. ^{[2
]}

Miyasaka, Y. ^{[2
]}

Kon, A. ^{[2
]}

Nishikino, M. ^{[2
]}

Nosach, Y. V. ^{[12
]}

Khikhlukha, D. ^{[1
]}

Tsygvintsev, I. P. ^{[13
]}

Kumar, D. ^{[1
]}

Nejdl, J. ^{[1
,10
]}

Margarone, D. ^{[1
]}

Sasorov, P. V. ^{[1
]}

Weber, S. ^{[1
]}

Kando, M. ^{[2
]}

Kiriyama, H. ^{[2
]}

Kato, Y. ^{[11
]}

Korn, G. ^{[1
]}

Kondo, K. ^{[2
]}

Bulanov, S. V. ^{[1
,2
]}

Kawachi, T. ^{[2
]}

Pirozhkov, A. S. ^{[2
]}

机构：

[1] Extreme Light Infrastruct ERIC, ELI Beamlines Facil, Dolni Brezany, Czech Republic

[2] Kansai Inst Photon Sci KPSI, QST, 8-1-7 Umemidai, Kizugawa 6190215, Japan

[3] STFC, Rutherford Appleton Lab, Cent Laser Facil, Didcot, England

[4] Osaka Univ, Osaka, Japan

[5] HB11 Energy Holdings, Freshwater, Australia

[6] Shanghai Jiao Tong Univ, Sch Phys & Astron, Key Lab Laser Plasmas, Minist Educ, Shanghai, Peoples R China

[7] Shanghai Jiao Tong Univ, Collaborat Innovat Ctr IFSA, Shanghai, Peoples R China

[8] Inst Plasma Phys ASCR, Prague, Czech Republic

[9] FZU Inst Phys ASCR, Prague, Czech Republic

[10] Czech Tech Univ, FNSPE, Prague, Czech Republic

[11] Osaka Univ, Inst Laser Engn, Osaka, Japan

[12] Natl Acad Sci Ukraine, Inst Phys, Kyiv, Ukraine

[13] ISTEQ AR, Yerevan, Armenia

来源：

HIGH POWER LASER SCIENCE AND ENGINEERING | 2024年 / 12卷

关键词：

laser-plasma interaction; precise target positioning; spectroscopy; ultra-high intensity; X-rays; APERIODIC MULTILAYER STRUCTURES; CHIRPED-PULSE AMPLIFICATION; X-RAY GENERATION; HIGH-CONTRAST; WAVELENGTH RANGE; PW; INTENSITY; RADIATION; ELECTRON; SYSTEM;

D O I：

10.1017/hpl.2024.11

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Tight focusing with very small f-numbers is necessary to achieve the highest at-focus irradiances. However, tight focusing imposes strong demands on precise target positioning in-focus to achieve the highest on-target irradiance. We describe several near-infrared, visible, ultraviolet and soft and hard X-ray diagnostics employed in a similar to 10(22) W/cm(2) laser-plasma experiment. We used nearly 10 J total energy femtosecond laser pulses focused into an approximately 1.3-mu m focal spot on 5-20 mu m thick stainless-steel targets. We discuss the applicability of these diagnostics to determine the best in-focus target position with approximately 5 mu m accuracy (i.e., around half of the short Rayleigh length) and show that several diagnostics (in particular, 3 omega reflection and on-axis hard X-rays) can ensure this accuracy. We demonstrated target positioning within several micrometers from the focus, ensuring over 80% of the ideal peak laser intensity on-target. Our approach is relatively fast (it requires 10-20 laser shots) and does not rely on the coincidence of low-power and high-power focal planes.

引用

页数：16

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