| Acronym | Meaning |
| ELI | Extra Low Interstitial |
| DPSS | Diode-pumped Solid-state |
| IBR | In-plane Birefringence |
| EI | Electron Impact |
| GLE | Generalized Langevin Equation |
| OLGA | On-Line Gas Chemistry Apparatus |
| DCM | Decoupled Cell Monte Carlo (in Simulations On Quantum Systems) |
| BD | Brueckner (orbitals With) Double (substitution) (in Electron Correlation) |
| GUGA | Graphical Unitary Group Approach |
| RTF | Room Temperature Fluorescence |