Resonant high harmonic generation from laser ablated plasma plumes

Resonant high harmonic generation (HHG) from laser-ablated plasma plumes is a process where high-energy photons are generated when an intense laser pulse interacts with a plasma created by the ablation of a material. ### Key Concepts: 1. **Laser Ablation**: This is a technique in which intense laser light is focused onto a material (often a solid) to produce a plasma.