High-brightness optical-field-ionization collisional-excitation extreme-ultraviolet lasing pumped by a 100-TW laser system in an optically preformed plasma waveguide

Abstract

Recent study on optical-field-ionization collisional-excitation extreme-ultraviolet lasing of Ni-like krypton at 32.8 nm pumped by a 100-TW laser system with an optically preformed plasma waveguide is reported. By using a 9-mm-long pure krypton plasma waveguide fabricated with the axicon-ignitor-heater scheme, the 32.8-nm extreme-ultraviolet laser provided an average output of 10 12 photons/pulse at pump energy of 1 J, more than one order of magnitude enhancement relative to the previous results with the same scheme at pump energy of 235 mJ. It is also found the far-field pattern of laser beams varies from a single peak profile at low pump energy to an annular profile at high pump energy due to over-ionization of krypton ions at the center of the plasma channel.

Proposal for precision wavelength measurement of the Ni-like gadolinium x-ray laser formed during the interaction of a nanostructured target with an ultrashort laser beam

“…The cluster jets were formed in a slit supersonic nozzle. A compact 32.8 nm XRL with a quantum yield of 10 12 photons per pulse, which is suited to many applications, has been developed [19]. The conversion coefficient achieved in [19] is 5 × 10 −6 .…”

“…A compact 32.8 nm XRL with a quantum yield of 10 12 photons per pulse, which is suited to many applications, has been developed [19]. The conversion coefficient achieved in [19] is 5 × 10 −6 . In [20], we proposed a highly efficient tabletop XRL with λ = 41.8 nm, pumped by OFI in a xenon cluster jet; the conditions exciting an ultrashort-pulse (~1 ps) XRL were discussed in [21].…”

A 110-TW multiple-beam laser system with a 5-TW wavelength-tunable auxiliary beam for versatile control of laser-plasma interaction

“…The distributed pumping system is fault tolerant and allows synthesis of optimized pump beam profile. This laser system has been used for precision control of laser-plasma interaction, including electron injection and acceleration with a laserwakefield accelerator in an optically preformed plasma waveguide [68], optical-field-ionization collisional-excitation extreme-UV lasing in an optically preformed plasma waveguide [69], fabrication of structured plasma waveguide for periodic laser-plasma interaction [70], and control of electron injection and betatron oscillation in a laserwakefield accelerator [45]. These experiments have benefited from the quality and stability of this laser facility and demonstrated its capability for applications in high-field physics.…”

Optically self-photopumped x-ray laser at 13.4 nm in Ni-like tin (Sn22+)

“…It involves the optical field ionization (OFI) of krypton (Kr IX, λ = 32.8 nm) [6,7] and xenon (Xe IX, λ = 41.8 nm) [8] cluster jets. A compact 32.8 nm XRL with a quantum yield of 10 12 photons per pulse, which is suited to many applications, has been developed [9]. The CF achieved in [9] is 5 • 10 −6 .…”

“…A compact 32.8 nm XRL with a quantum yield of 10 12 photons per pulse, which is suited to many applications, has been developed [9]. The CF achieved in [9] is 5 • 10 −6 . The model of the highly efficient monochromatic radiation sources near λ = 13.5 and 11.3 nm, intended for commercial nanolithography, was presented in [10].…”