Figure 1
From: Resonant dual-pulse laser ignition technique based on oxygen REMPI pre-ionization

Simplified energy level diagram of molecular oxygen showing the targeted 2 + 1 REMPI scheme (green arrows).
From: Resonant dual-pulse laser ignition technique based on oxygen REMPI pre-ionization

Simplified energy level diagram of molecular oxygen showing the targeted 2 + 1 REMPI scheme (green arrows).