One long and two short pumping pulses control for plasma x-ray amplifier optimization.

Area of Science:

• Plasma physics
• Laser technology
• X-ray science

Background:

• Developing efficient soft x-ray laser plasma amplifiers for seeded operation necessitates enhanced control over spatial extent, brilliance, and gain lifetime.
• Current methods face challenges in optimizing these parameters simultaneously.

Purpose of the Study:

• To investigate the efficacy of a novel pumping scheme for improved control of soft x-ray laser plasma amplifiers.
• To explore the tunability of gain lifetime in specific x-ray laser systems using this new method.

Main Methods:

• Utilizing a one long and two short pump pulses (1L2S) configuration to pump plasma amplifiers.
• Analyzing the Ni-like Ag x-ray laser for spatial extent, brilliance, and gain lifetime control.
• Investigating the Ne-like Ti x-ray laser for gain lifetime tunability.

Main Results:

• The 1L2S pumping scheme demonstrates significant advantages in controlling transverse spatial extent, brilliance, and gain lifetime for Ni-like Ag x-ray lasers.
• Substantial tunability of the gain lifetime was observed in the 1L2S scheme for Ne-like Ti x-ray lasers.
• The findings indicate potential benefits for direct and chirped harmonics seeding amplification approaches.

Conclusions:

• The 1L2S pumping scheme offers a promising approach for precise control of soft x-ray laser plasma amplifiers.
• This method can lead to more efficient pump energy utilization and reduced amplified spontaneous emission.
• The observed gain lifetime tunability opens new avenues for advanced seeded x-ray laser applications.