| TRIR | Time-resolved infrared |
| TD-DFT | Time-dependent density functional theory |
| IC | Internal conversion |
| ISC | Intersystem crossing |
| FTIR | Fourier transform infrared |
| OPA | Optical parametric amplifier |
| THG | Third-harmonic generator |
| DFT | Density functional theory |
| OD | Optical density |
| UV–vis | Ultraviolet–visible |