Abstract
Production of extreme-ultraviolet radiation by high-order harmonic generation is demonstrated to yield unprecedented spectral purity of [Formula presented] at wavelengths covering the entire range 40–100 nm. Tunability and sub-[Formula presented] bandwidth of the harmonics are demonstrated in recordings of the He ([Formula presented]) and Ar ([Formula presented]) resonance lines at 52.2 and 86.6 nm. Frequency shift of the harmonics due to chirp-induced phenomena are investigated and found to be small, resulting in a frequency accuracy of about [Formula presented] in the domain of extreme-ultraviolet radiation.
Original language | English |
---|---|
Journal | Physical Review Letters |
Volume | 91 |
Issue number | 16 |
DOIs | |
Publication status | Published - 2003 |
Externally published | Yes |