High-intensity subpicosecond XeCl laser system

Area of Science:

• High-intensity laser physics
• Ultrafast optics
• Plasma science

Background:

• Development of high-power laser systems is crucial for scientific advancement.
• Subpicosecond pulse amplification presents unique technical challenges.

Purpose of the Study:

• To describe a terawatt-class laser system utilizing XeCl discharge amplifiers.
• To characterize the performance and focused intensity of the laser system.

Main Methods:

• Amplification of subpicosecond pulses in XeCl discharge amplifiers.
• Characterization of pulse energy, duration, and focal spot dimensions.
• Utilizing f/3.7 and f/1 optics for focusing.

Main Results:

• Generation of 250-mJ, 335-fsec pulses at a 1-Hz repetition rate.
• Measured focal-spot dimensions of 3.4 µm x 4.1 µm with f/3.7 optics.
• Achieved mean focal volume intensity of 4.6 x 10^18 W/cm^2.
• Demonstrated capability for focused intensity of 6.4 x 10^19 W/cm^2 with f/1 optics.

Conclusions:

• The described terawatt-class laser system reliably produces high-energy, ultrashort pulses.
• The system achieves ultra-high focused intensities, paving the way for new experimental regimes.
• This laser technology is suitable for advanced applications in high-field physics and inertial confinement fusion research.