Abstract
A CO2-pumped far-infrared (FIR) laser has been used to drive transitions between S and P levels of 4He Rydberg states with the same principal quantum number (n). The levels are tuned to resonance with the fixed-frequency FIR laser through application of an intense magnetic field. Measurements of such transitions are particularly valuable as they provide high-resolution data for low L states, a previously ill-defined area in the otherwise wellknown energy-level structure of 4He.
| Original language | English |
|---|---|
| Pages (from-to) | 99-101 |
| Number of pages | 3 |
| Journal | Optics Letters |
| Volume | 6 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 1981 |
| Externally published | Yes |