Attosecond Pulse Amplification in a Plasma-Based X-Ray Laser Dressed by an Infrared Laser Field

Area of Science:

• Atomic, Molecular, and Optical Physics
• Plasma Physics
• X-ray Science

Background:

• High-harmonic generation (HHG) produces attosecond pulses for studying electron dynamics.
• Current attosecond pulses have limited energy, especially above 100 eV, restricting applications.

Purpose of the Study:

• To propose a novel method for amplifying attosecond X-ray pulses.
• To overcome the energy limitations of current attosecond pulse sources.

Main Methods:

• Utilizing a plasma-based X-ray laser as an active medium.
• Dressing the X-ray laser medium with a replica of the HHG laser field.

Main Results:

• The proposed method enables amplification of attosecond pulses.
• The technique is suggested for implementation in a C5+ X-ray laser at 3.4 nm.

Conclusions:

• This amplification technique could significantly enhance the utility of attosecond pulses.
• The method offers a pathway to higher-energy attosecond pulses in the "water window" range.