Optical properties of relativistic plasma mirrors

Area of Science:

• Plasma physics
• Laser-optics interactions
• Materials science

Background:

• Ultrahigh-power femtosecond lasers necessitate novel optical components.
• Plasma mirrors, formed by laser ionization of surfaces, offer unique reflective properties.
• Laser-induced surface deformation limits plasma mirror performance at high intensities.

Purpose of the Study:

• To develop a physical model for laser-induced plasma mirror deformation.
• To validate the model through numerical simulations and experimental data.
• To investigate methods for mitigating deformation using laser phase control.

Main Methods:

• Derivation of a simple analytical model for laser-induced plasma mirror deformation.
• Numerical simulations to test the model's predictions.
• Experimental validation of the model and proposed mitigation strategies.

Main Results:

• The analytical model accurately describes the fundamental physics of plasma mirror deformation.
• Numerical and experimental results confirm the model's validity.
• Control of laser phase is identified as a viable method to reduce mirror deformation.

Conclusions:

• The developed model provides a foundational understanding of plasma mirror dynamics.
• Mitigating laser-induced deformation is crucial for utilizing plasma mirrors at ultrahigh laser intensities.
• Laser phase control offers a practical approach to enhance plasma mirror stability and performance.