The Laser-Matter Interactions Group of the Center for Energy Research studies the interactions of high-energy short-pulse lasers with matter, both above and below the ablation threshold. Our researchers include members of the Mechanical and Aerospace Engineering Department, Electrical and Computer Engineering Department, and the Center for Energy Research. Experimental studies are performed in the Laser Plasma and Laser Matter Interactions Laboratory, which houses several solid-state and excimer lasers as well as an extensive suite of diagnostics.

Sub-ablation threshold studies
We study the micromechanical behavior of materials subjected to high-cycle thermal stresses imposed by short-pulse lasers. This includes laser-induced damage to UV optics and surface evolution of energy-absorbing armor for pulsed radiation sources.

Laser ablation plume studies
We study the internal structure, expansion dynamics and phase-change physics of laser ablation plumes. Ablation plumes are found in applications such as pulsed laser deposition and laser-plasma light sources, and are related to a variety of terrestrial and astrophysical applications.

Laser plasma studies
We study the hydrodynamics and radiative properties of laser plasmas in intensity regimes from 109 to 1013 W/cm2. At present, our research includes laser-plasma light sources for extreme ultraviolet lithography and radiative properties of non-LTE underdense laser plasma.

Facilities
Our experimental research is performed in the Laser Plasma and Laser Matter Interactions Laboratory. Light sources include Joule-class excimer and solid state lasers.

 

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Laser-Matter Interactions Research
UCSD Center for Energy Research